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Erma - Hand Refractometer with ATC - This refractometer comes with automatic temperature compensation. It thus provides accurate and repeatable measurements on easy to read scale. Also, it is very easy to use. The user first needs to take a drop or 2 of the brew on the prism and hold the meter to the light. Then, the user needs to look through the eyepiece to get the reading. The device is sturdy and light weighted aluminium body with a superior quality rubber grip. Erma hand refractometer is universally fit and ideal for agricultural, gardening, industrial and educational purpose. It is also used for sugar concentration in fruit juices, soft drinks, vegetables, foods and cooling lubricants. It is majorly used for measuring soya-bean milk concentration and concentration of sauces, ketchup, jams, honey, etc.