Handheld antifreeze freezing point meter, freezing point meter, also known as optical freezing point meter, freezing point tester, car freezing point meter, antifreeze freezing point meter, antifreeze freezing point tester, is designed for measuring the freezing point of antifreeze, glass liquid and the specific gravity of battery solution, as long as a few drops of the liquid in the prism, and then observed toward the light, you can quickly read out the measured value of the solution. ADVANCED AUTOMATIC TEMPERATURE COMPENSATION(ATC)TECHNOLOGY: Adjust Automatically to Compensate for Temperature, Which makes it even easier to get fast results. SIMPLY USE: Using the dropper to take a sample of wort and put it on the prism. Then hold the refractometer up to the light and look scale through the eyepiece, more accurate to measure sugars in verities of melon, fruits or juice. WIDE USE: The Honey Refractometer is ideal for measuring honey, condensed milk, vegetable oils, sugar syrup, fruit jam and molasses. PORTABLE HONEY CONTENT TESTER: Easy to use, sturdy design, compact in size and light in weight, convenient to keep up and carry around. The ATC system automatically adjusts to the proper temperature during operation. Fast and accurate checking of Adblue urea levels. Accurately measure the density of battery fluid (1.100-1.400sg) Measures the degree of coolant antifreeze (-50-0℃) Measure the degree of antifreeze in the solution (-40℃ - -10℃) Measure the concentration of urea in solution (30%-35%) Measurement range: Adblue:30%-35%. Ethylene glycol:-50-0℃ Propylene glycol:-50-0℃ Detergent:-40℃ - -10℃ Battery fluid:1.100-1.400sg. Accuracy: Adblue:±0.5% Ethylene Glycol:±5℃ Propylene Glycol:±5℃ Detergent:±5℃ sg-Battery liquid:±0.02 Min. Adblue:0.5%