Portable Salinity Refractometer Model STX-3

Based on light refraction in liquid, this compact refractometer accurately display percentages of dissolved salt ppt/specific gravity in liquid. Simply place a few drops of sample liquid on the specially angled lens and peer through the adjustable eyepiece. Results instantly appear along a scale within the eyepiece. No power source required! A rubber-coating eliminates inaccuracies caused by body heat. Calibration tool, full instructions, and protective case included. This dual scale salt refractometer may be used to determine either the parts per thousand of salt dissolved in water or the specific gravity of salt water. It’s the affordable way to accurately monitor salt content in fisheries, nursery irrigation systems, sea water, etc. Temperature compensated from 10°C to 30°C.
WARNING: Cancer and Reproductive Harm