Salinity Water Quality Tester LS311 with Nine Parameters
Salinity Water Quality Tester LS311 with Nine Parameters In stock. Shipping calculated at checkout.
In-stock orders usually take 2–4 business days to prepare; delivery typically takes 5–15 business days after dispatch. Availability is confirmed at checkout. Duties and taxes may apply. Shipping details · Return conditions
Need help choosing? Tell us what you need to measure.
Shipping & returns
Shipping & returns
See our shipping policy for preparation and delivery information, and our return policy for return conditions.
For a delivery estimate to your destination, contact Mcooh.
Choosing the right instrument?
Tell us your measurement range, material or target, and operating conditions.
Description
Description
The Linshang LS311 salinity water quality tester provides nine readings in a compact pen-style instrument. It uses UV absorbance for COD, TOC and UV275 readings, together with electrode conductivity for TDS and EC measurements. Water temperature appears alongside the sample results on a 1.14-inch color display.
Compare a set of water indicators
UV-absorbance-based COD and TOC readings provide indicators for sample comparison, while UV275 records absorbance at the specified ultraviolet wavelength. Conductivity and calculated TDS provide complementary information on dissolved ionic content. Automatic temperature compensation supports consistent comparisons between samples.
The LS311 also calculates salinity, general hardness and specific gravity from conductivity. These added displays support suitable seawater and aquaculture sample checks. Select the displayed parameter for the sample and compare it within its stated measuring range.
The instrument's four-color score display summarizes its internal rating for the supported drinking-water measurement mode. Individual numerical readings remain available for comparing samples and tracking changes.
Use the correct sample and calibration setup
Calibrate with distilled water before first use and after extended storage. Clean the probe with water between samples to reduce carryover, and use non-corrosive samples within 0–50°C. Follow the prescribed cleaning method to protect the optical and electrode surfaces. Two AAA alkaline batteries power the tester.
Technical specifications
| COD / TOC range and resolution | 0–100mg/L, 0.01mg/L |
|---|---|
| COD / TOC accuracy | ±0.5mg/L at 0–5mg/L, ±10% of standard value at 5–100mg/L |
| UV275 range / resolution | 0–1.0au/cm / 0.001au/cm |
| UV275 accuracy | ±0.01au/cm at 0–0.1, ±10% of standard value at 0.1–1.0 |
| TDS range / accuracy | 0–2000ppm, ±5ppm at 0–100ppm and ±5% of standard value at 100–2000ppm |
| EC range / accuracy | 0–4000µS/cm, ±10µS/cm at 0–200 and ±5% of standard value at 200–4000 |
| Salinity range / resolution | 0–26% / 0.01% |
| Salinity accuracy | ±0.25% at 0–5%, ±5% of standard value at 5–15%, ±10% at 15–26% |
| General hardness / specific gravity | 0–1000ppm / 0.9800–1.2000 |
| Water temperature | 0–50°C, 0.1°C resolution, ±2°C accuracy |
| Dimensions / instrument weight | 157 × 37 × 14mm / approximately 68g |
