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How to Choose a Refractometer: Digital, Optical, ATC, and Scale
Compare a digital vs optical refractometer by sample, scale, range, ATC limits, reading method, and verification needs. -
How to Use a Gem Refractometer: Refractive Index, Birefringence, and Identification Limits
Use a gem refractometer to record RI and birefringence evidence while recognizing range, surface, and identification limits.
