Generic Medical Refractometer ATC Protein Refractometer Concentration Meter - SP: 0-12g/dL, U.G: 1.000-1.050

ATC is a built-in mechanical feature that adjusts the optical path inside the refractometer based on temperature. It uses a bimetallic strip that flexes with temperature changes between 10°C and 30°C, automatically correcting the reading so that the measured concentration value is accurate regardless of the sample's temperature, eliminating the need for manual correction tables or temperature-controlled samples.

Calibration is performed using distilled or deionized water. Place a few drops on the prism, close the cover plate, and look through the eyepiece. The boundary line should align with the zero mark (0 g/dL or 1.000 SG). If it does not, use the provided calibration screw to adjust until it does. Calibration should be checked at the start of each testing session or when moving between significantly different ambient temperatures to ensure ongoing accuracy.

Yes, while calibrated for protein and urine specific gravity scales, the fundamental measurement is refractive index, which correlates with total dissolved solids (TDS). It can provide indicative measurements for other aqueous solutions like fruit juices, honey, or brewing wort. However, for precise concentration values of other specific solutes (e.g., sucrose), a refractometer with a corresponding dedicated scale is recommended.