Glycol Refractometer

This instrument provides "good down to" temperature readings for both ethylene and propylene glycol solutions, along with an exact percentage of glycol calculation on the scale. It operates similarly to an oil refractometer. The operator simply places a drop or two of the glycol solution on the Daylight Plate of the instrument. Then, while looking through the eyepiece and focusing, a distinct separation on the scale indicates an accurate reading of the glycol concentration.