Salt Refractometers

Measures salt content in sea water, aquariums, breeding ponds or pickling brines. While the scale is calibrated for sodium chloride it can also be used for calcium chloride, barium, cobalt, magnesium, cesium, potassium, cupric sulfate, potassium iodide, citric acid and acetic acid (vinegar), when tested against a known standard. Deluxe model features double scale in parts per thousand, specific gravity and automatic temperature compensation (ATC).