{"title":"Resistivity \u0026 Sheet Resistance Testers","description":"\u003cp\u003eExplore instruments for sheet resistance, resistivity and material resistance measurements. Select a four-probe tester for conductive specimens or a surface resistance and volume resistivity instrument for insulating materials, according to the measurement method and range required. Product pages distinguish the electrical measurement range from specimen-dependent calculated properties.\u003c\/p\u003e\u003cp\u003eCompare the available test voltage, channel count, interfaces and supplied probes or cables before choosing a configuration. Electrode boxes, probe stands and expansion equipment are identified separately when optional. Overall instrument dimensions, net weight and exact package contents support practical bench planning and help buyers match the instrument to their intended measurement setup.\u003c\/p\u003e\n\u003cp\u003eExplore more \u003ca href=\"\/collections\/electrical-electronic-instruments\"\u003eelectrical and bench instruments\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"testkey-multichannel-four-probe-tester-tk2528","title":"Multichannel Four-Probe Resistivity Tester TK2528","description":"\u003cp\u003eThe Testkey TK2528 four-probe tester measures resistance and sheet resistance and calculates resistivity and conductivity using the specimen dimensions.\u003c\/p\u003e\n\u003cp\u003eSelect 4, 10, 20 or 30 scanning channels to suit the measurement sequence. Resistivity and conductivity calculations depend on the specimen dimensions and four-probe arrangement.\u003c\/p\u003e\n\u003ch3\u003eModel comparison and specifications\u003c\/h3\u003e\n\u003cdiv class=\"spec-table\" role=\"region\" aria-label=\"TK2528-4, TK2528-10, TK2528-20, TK2528-30 specifications\" tabindex=\"0\" style=\"max-width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;min-width:660px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#edf3f4;\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;white-space:nowrap;\"\u003eTK2528-4\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;white-space:nowrap;\"\u003eTK2528-10\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;white-space:nowrap;\"\u003eTK2528-20\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;white-space:nowrap;\"\u003eTK2528-30\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eIncluded scanning channels\u003c\/th\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e4\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e10\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e20\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e30\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eResistance measurement range\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1 µΩ–2 MΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eSheet resistance measurement range\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1 µΩ\/□–2 MΩ\/□\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eMeasured quantities\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eResistance, sheet resistance, resistivity and conductivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eBasic resistance accuracy\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e0.05%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eBasic sheet resistance \/ resistivity accuracy\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eReadout digits\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e4½\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eMeasurement time\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eFAST 12 ms\/channel, MED 27 ms\/channel, SLOW1 120 ms\/channel, SLOW2 244 ms\/channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eTemperature sensor inputs\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003ePt100 and Pt500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eSupplied temperature sensor\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eTSK103 Pt100 RTD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eSupplied four-probe accessory\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eTSK208A linear test probe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eOperating modes\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eSingle-instrument measurement and scanning measurement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eTemperature measurement range and accuracy\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e−10.0–299.9 °C, ±0.2 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eStandard interfaces\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eUSB DEVICE, USB HOST, RS232, HANDLER, LAN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eDisplay\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e4.3-inch 480 x 272 24-bit color TFT LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eOverall dimensions (W x H x D)\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e258 x 110 x 350 mm (W x H x D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eNet weight\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e3.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eResistivity is calculated from the electrical measurement and specimen geometry.\u003c\/p\u003e\n\u003cp\u003eChassis reference dimensions are 213 × 87 × 320 mm (W × H × D).\u003c\/p\u003e\n\u003cp\u003eA test stand and additional probes are available separately.\u003c\/p\u003e\n\u003ch3\u003eIncluded equipment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelected TK2528 series instrument\u003c\/li\u003e\n\u003cli\u003eTSK107 power cord\u003c\/li\u003e\n\u003cli\u003eTSK208A linear test probe\u003c\/li\u003e\n\u003cli\u003eTSK103 Pt100 RTD temperature sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProduct photographs show the TK2528-30 configuration. The selected model determines the supplied electrical specification and channel configuration.\u003c\/p\u003e\n\u003cp\u003eBrowse \u003ca href=\"\/collections\/resistivity-sheet-resistance-testers\"\u003eResistivity \u0026amp; Sheet Resistance Testers\u003c\/a\u003e to compare related instruments.\u003c\/p\u003e","brand":"Testkey","offers":[{"title":"TK2528-4","offer_id":68243233636395,"sku":"ELE-11D8-01","price":4386.05,"currency_code":"USD","in_stock":true},{"title":"TK2528-10","offer_id":68243233669163,"sku":"ELE-11D8-02","price":5490.28,"currency_code":"USD","in_stock":true},{"title":"TK2528-20","offer_id":68243233701931,"sku":"ELE-11D8-03","price":6832.54,"currency_code":"USD","in_stock":true},{"title":"TK2528-30","offer_id":68243233734699,"sku":"ELE-11D8-04","price":8652.71,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0273\/2133\/5851\/files\/multichannel-four-probe-tester-tk2528-main.jpg?v=1794413255"},{"product_id":"testkey-surface-volume-resistivity-tester-tk2683ax","title":"Surface Resistance \u0026 Volume Resistivity Tester TK2683AX","description":"\u003cp\u003eThe Testkey TK2683AX tester measures surface resistance and volume resistivity alongside insulation resistance and leakage current.\u003c\/p\u003e\n\u003cp\u003eSurface-resistance and volume-resistivity measurements require suitable electrodes and specimen dimensions. The electrical resistance range is shown in ohms.\u003c\/p\u003e\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cdiv class=\"spec-table\" role=\"region\" aria-label=\"TK2683AX specifications\" tabindex=\"0\" style=\"max-width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;min-width:380px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#edf3f4;\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eResistance measurement range\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e10 kΩ–10 TΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eDC test voltage\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1–1000 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eMeasured quantities\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eInsulation resistance, leakage current, surface resistance and volume resistivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eResistance accuracy\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eTest voltage accuracy\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eAt ≥10 V, 1% ±1 V. Below 10 V, 10% ±0.1 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eLeakage current ranges\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1–10 nA, 10–100 nA, 100 nA–1 µA, 1–10 µA, 10–100 µA, 100 µA–1 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eLeakage measurement input resistance\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1 MΩ on the two lowest current ranges, 10 kΩ on the other four ranges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eOutput current limit\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e10 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eMeasurement speed\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eFast ≤30 ms, slow ≤60 ms per measurement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eProgrammable charge time \/ measurement delay\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e0–999 s \/ 0–999 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eIncluded measurement channels\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eStandard interfaces and protocols\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eRS232C, USB HOST, USB DEVICE and HANDLER. SCPI and MODBUS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eInput power\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e90–121 V AC at 60 Hz, or 198–242 V AC at 50 Hz. Power consumption \u0026lt;50 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eMaterial-test electrode equipment\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eTSK201 electrode box available separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eDisplay\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e4.3-inch 480 x 272 24-bit color LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eOperating environment\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e10–40 °C, ≤90% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eOverall dimensions (W x H x D)\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e258 x 110 x 350 mm (W x H x D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eNet weight\u003c\/th\u003e\n\u003ctd colspan=\"1\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e3.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eThe instrument stores 20 internal files and supports external USB storage.\u003c\/p\u003e\n\u003cp\u003eChassis reference dimensions are 213 × 87 × 320 mm (W × H × D).\u003c\/p\u003e\n\u003cp\u003eThe TSK201 electrode box is available separately for material measurements.\u003c\/p\u003e\n\u003ch3\u003eIncluded equipment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelected TK2683AX instrument\u003c\/li\u003e\n\u003cli\u003eTSK107 power cord\u003c\/li\u003e\n\u003cli\u003eTSK102 three-terminal test cable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProduct photographs show the TK2683AX instrument.\u003c\/p\u003e\n\u003cp\u003eBrowse \u003ca href=\"\/collections\/resistivity-sheet-resistance-testers\"\u003eResistivity \u0026amp; Sheet Resistance Testers\u003c\/a\u003e to compare related instruments.\u003c\/p\u003e","brand":"Testkey","offers":[{"title":"TK2683AX","offer_id":68243233931307,"sku":"ELE-3FE5-01","price":1867.76,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0273\/2133\/5851\/files\/surface-volume-resistivity-tester-tk2683ax-main.jpg?v=1794413306"},{"product_id":"testkey-surface-volume-resistivity-tester-tk2691x","title":"Surface Resistance \u0026 Volume Resistivity Tester TK2691X \/ TK2690X","description":"\u003cp\u003eThe Testkey TK2691X and TK2690X testers measure surface resistance and volume resistivity alongside insulation resistance and leakage current.\u003c\/p\u003e\n\u003cp\u003eSurface-resistance and volume-resistivity measurements require suitable electrodes and specimen dimensions. The electrical resistance range is shown in ohms.\u003c\/p\u003e\n\u003ch3\u003eModel comparison and specifications\u003c\/h3\u003e\n\u003cdiv class=\"spec-table\" role=\"region\" aria-label=\"TK2691X, TK2690X specifications\" tabindex=\"0\" style=\"max-width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;min-width:410px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#edf3f4;\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;white-space:nowrap;\"\u003eTK2691X\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;white-space:nowrap;\"\u003eTK2690X\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eResistance measurement range\u003c\/th\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e100 kΩ–30 TΩ\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e100 kΩ–15 TΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eDC test voltage\u003c\/th\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1–3000 V\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1–1500 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eMeasured quantities\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eInsulation resistance, leakage current, surface resistance and volume resistivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eResistance accuracy\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eTest voltage accuracy\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eAt ≥10 V, 1% ±1 V. Below 10 V, 10% ±0.1 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eLeakage current ranges\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1–10 nA, 10–100 nA, 100 nA–1 µA, 1–10 µA, 10–100 µA, 100 µA–1 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eLeakage measurement input resistance\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1 MΩ on the two lowest current ranges, 10 kΩ on the other four ranges\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eOutput current limit\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e10 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eMeasurement speed\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eFast ≤30 ms, slow ≤60 ms per measurement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eProgrammable charge time \/ measurement delay\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e0–999 s \/ 0–999 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eIncluded measurement channels\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eStandard interfaces and protocols\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eRS232C, USB HOST, USB DEVICE and HANDLER. SCPI and MODBUS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eInput power\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e90–121 V AC at 60 Hz, or 198–242 V AC at 50 Hz. Power consumption \u0026lt;50 VA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eMaterial-test electrode equipment\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eTSK201 electrode box available separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eDisplay\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e4.3-inch 480 x 272 24-bit color LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eOperating environment\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e10–40 °C, ≤90% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eOverall dimensions (W x H x D)\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e258 x 110 x 350 mm (W x H x D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eNet weight\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e3.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eThe instrument stores 20 internal files and supports external USB storage.\u003c\/p\u003e\n\u003cp\u003eChassis reference dimensions are 213 × 87 × 320 mm (W × H × D).\u003c\/p\u003e\n\u003cp\u003eThe TSK201 electrode box is available separately for material measurements.\u003c\/p\u003e\n\u003ch3\u003eIncluded equipment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelected TK2691X or TK2690X instrument\u003c\/li\u003e\n\u003cli\u003eTSK107 power cord\u003c\/li\u003e\n\u003cli\u003eTSK102 three-terminal test cable\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProduct photographs show the TK2691X instrument.\u003c\/p\u003e\n\u003cp\u003eBrowse \u003ca href=\"\/collections\/resistivity-sheet-resistance-testers\"\u003eResistivity \u0026amp; Sheet Resistance Testers\u003c\/a\u003e to compare related instruments.\u003c\/p\u003e","brand":"Testkey","offers":[{"title":"TK2691X","offer_id":68243234455595,"sku":"ELE-6AEE-01","price":3306.02,"currency_code":"USD","in_stock":true},{"title":"TK2690X","offer_id":68247369252907,"sku":"ELE-6AEE-02","price":2572.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0273\/2133\/5851\/files\/surface-volume-resistivity-tester-tk2691x-main.jpg?v=1794413337"},{"product_id":"testkey-four-probe-resistivity-tester-tk2525","title":"Four-Probe Resistivity Tester TK2525 Series - 5½-Digit Readings","description":"\u003cp\u003eThe Testkey TK2525 four-probe tester measures resistance and sheet resistance and calculates resistivity and conductivity using the specimen dimensions.\u003c\/p\u003e\n\u003cp\u003eSelect the resistance and sheet-resistance span required by the specimen. Resistivity and conductivity calculations also depend on the specimen dimensions and four-probe arrangement.\u003c\/p\u003e\n\u003ch3\u003eModel comparison and specifications\u003c\/h3\u003e\n\u003cdiv class=\"spec-table\" role=\"region\" aria-label=\"TK2525, TK2525+ specifications\" tabindex=\"0\" style=\"max-width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;min-width:410px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#edf3f4;\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;white-space:nowrap;\"\u003eTK2525\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;white-space:nowrap;\"\u003eTK2525+\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eResistance measurement range\u003c\/th\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e0.1 µΩ–110 MΩ\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e0.1 µΩ–2000 MΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eSheet resistance measurement range\u003c\/th\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e0.1 µΩ\/□–110 MΩ\/□\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e0.1 µΩ\/□–2000 MΩ\/□\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eMeasured quantities\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eResistance, sheet resistance, resistivity and conductivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eBasic resistance accuracy\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e0.01%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eBasic sheet resistance \/ resistivity accuracy\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eReadout digits\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e5½\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eMeasurement time\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eFAST 10 ms, MED 24 ms, SLOW1 110 ms, SLOW2 450 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eComparator\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eHI\/IN\/LO output, 10 limit settings using absolute limits or percentage limits with a nominal value\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eTemperature sensor inputs\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003ePt100 and Pt500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eSupplied temperature sensor\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eTSK103 Pt100 RTD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eSupplied four-probe accessory\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eLinear test probe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eStandard interfaces\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eUSB DEVICE, USB HOST, RS232, HANDLER, LAN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eDisplay\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e4.3-inch 480 x 272 24-bit color TFT LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eOverall dimensions (W x H x D)\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e258 x 110 x 350 mm (W x H x D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eNet weight\u003c\/th\u003e\n\u003ctd colspan=\"2\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e3.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eResistivity is calculated from the electrical measurement and specimen geometry.\u003c\/p\u003e\n\u003cp\u003eChassis reference dimensions are 213 × 87 × 320 mm (W × H × D).\u003c\/p\u003e\n\u003cp\u003eTemperature compensation and temperature conversion are supported.\u003c\/p\u003e\n\u003cp\u003eA test stand, additional probes and a GPIB interface are available separately.\u003c\/p\u003e\n\u003ch3\u003eIncluded equipment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelected TK2525 series instrument\u003c\/li\u003e\n\u003cli\u003eTSK107 power cord\u003c\/li\u003e\n\u003cli\u003eLinear test probe\u003c\/li\u003e\n\u003cli\u003eTSK103 Pt100 RTD temperature sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProduct photographs show the TK2525 configuration. The selected model determines the supplied electrical specification and channel configuration.\u003c\/p\u003e\n\u003cp\u003eBrowse \u003ca href=\"\/collections\/resistivity-sheet-resistance-testers\"\u003eResistivity \u0026amp; Sheet Resistance Testers\u003c\/a\u003e to compare related instruments.\u003c\/p\u003e","brand":"Testkey","offers":[{"title":"TK2525","offer_id":68247174283307,"sku":"ELE-1C8B-01","price":12564.76,"currency_code":"USD","in_stock":true},{"title":"TK2525+","offer_id":68247174316075,"sku":"ELE-1C8B-02","price":19459.28,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0273\/2133\/5851\/files\/four-probe-resistivity-tester-tk2525-main.jpg?v=1794456077"},{"product_id":"testkey-four-probe-resistivity-tester-tk2526","title":"Four-Probe Resistivity Tester TK2526 - Four Range Configurations","description":"\u003cp\u003eThe Testkey TK2526 four-probe tester measures resistance and sheet resistance and calculates resistivity and conductivity using the specimen dimensions.\u003c\/p\u003e\n\u003cp\u003eSelect the resistance and sheet-resistance span required by the specimen. Resistivity and conductivity calculations also depend on the specimen dimensions and four-probe arrangement.\u003c\/p\u003e\n\u003ch3\u003eModel comparison and specifications\u003c\/h3\u003e\n\u003cdiv class=\"spec-table\" role=\"region\" aria-label=\"TK2526A, TK2526B, TK2526, TK2526+ specifications\" tabindex=\"0\" style=\"max-width:100%;overflow-x:auto;\"\u003e\u003ctable style=\"width:100%;min-width:660px;border-collapse:collapse;\"\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#edf3f4;\"\u003eSpecification\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;white-space:nowrap;\"\u003eTK2526A\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;white-space:nowrap;\"\u003eTK2526B\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;white-space:nowrap;\"\u003eTK2526\u003c\/th\u003e\n\u003cth scope=\"col\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;white-space:nowrap;\"\u003eTK2526+\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eResistance measurement range\u003c\/th\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e10 µΩ–200 kΩ\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1 µΩ–20 kΩ\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1 µΩ–2 MΩ\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1 µΩ–20 MΩ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eSheet resistance measurement range\u003c\/th\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e10 µΩ\/□–200 kΩ\/□\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1 µΩ\/□–20 kΩ\/□\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1 µΩ\/□–2 MΩ\/□\u003c\/td\u003e\n\u003ctd style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e1 µΩ\/□–20 MΩ\/□\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eMeasured quantities\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eResistance, sheet resistance, resistivity and conductivity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eBasic resistance accuracy\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e0.05%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eBasic sheet resistance \/ resistivity accuracy\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eReadout digits\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e4½\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eMeasurement time\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eFAST 10 ms, MED 24 ms, SLOW1 110 ms, SLOW2 450 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eComparator\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eHI\/IN\/LO output, 3 limit settings using absolute limits or percentage limits with a nominal value\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eTemperature sensor inputs\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003ePt100 and Pt500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eSupplied temperature sensor\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eTSK103 Pt100 RTD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eSupplied four-probe accessory\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eLinear test probe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eStandard interfaces\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003eUSB DEVICE, USB HOST, RS232, HANDLER\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eDisplay\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e4.3-inch 480 x 272 24-bit color TFT LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eOverall dimensions (W x H x D)\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e258 x 110 x 350 mm (W x H x D)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;position:sticky;left:0;background:#f7f9fa;min-width:145px;\"\u003eNet weight\u003c\/th\u003e\n\u003ctd colspan=\"4\" style=\"padding:8px 10px;text-align:left;vertical-align:top;border:1px solid #dce0e5;\"\u003e3.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eResistivity is calculated from the electrical measurement and specimen geometry.\u003c\/p\u003e\n\u003cp\u003eChassis reference dimensions are 213 × 87 × 320 mm (W × H × D).\u003c\/p\u003e\n\u003cp\u003eTemperature compensation and temperature conversion are supported.\u003c\/p\u003e\n\u003cp\u003eA test stand and additional probes are available separately.\u003c\/p\u003e\n\u003ch3\u003eIncluded equipment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSelected TK2526 series instrument\u003c\/li\u003e\n\u003cli\u003eTSK107 power cord\u003c\/li\u003e\n\u003cli\u003eLinear test probe\u003c\/li\u003e\n\u003cli\u003eTSK103 Pt100 RTD temperature sensor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eProduct photographs show the TK2526 configuration. The selected model determines the supplied electrical specification and channel configuration.\u003c\/p\u003e\n\u003cp\u003eBrowse \u003ca href=\"\/collections\/resistivity-sheet-resistance-testers\"\u003eResistivity \u0026amp; Sheet Resistance Testers\u003c\/a\u003e to compare related instruments.\u003c\/p\u003e","brand":"Testkey","offers":[{"title":"TK2526A","offer_id":68247212326955,"sku":"ELE-A2E3-01","price":2933.11,"currency_code":"USD","in_stock":true},{"title":"TK2526B","offer_id":68247212359723,"sku":"ELE-A2E3-02","price":1917.51,"currency_code":"USD","in_stock":true},{"title":"TK2526","offer_id":68247212392491,"sku":"ELE-A2E3-03","price":3891.49,"currency_code":"USD","in_stock":true},{"title":"TK2526+","offer_id":68247212425259,"sku":"ELE-A2E3-04","price":4990.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0273\/2133\/5851\/files\/four-probe-resistivity-tester-tk2526-main.jpg?v=1794456095"}],"url":"https:\/\/mcooh.com\/collections\/resistivity-sheet-resistance-testers.oembed","provider":"Mcooh","version":"1.0","type":"link"}