Product application:      The hand held refractometers' advantages are the structure very simple,shockproof,clear view,cheap and easy to operation and carry.The brix series are used for canned food,fruit juice making,fermentation,drinks,fruit and collecting honey,etc.The salinity series are used for aquaculture;aquarium and saline to prepare for the medical series are designed to measure the serum proteins and specific gravity of urine.The series of industria are used to measure the car battery fluid,antifreeze fluid,cleaning fluid,lubricating oil of machine and cutting fluid.      our all refractometers with Automatic temperature Compensation system.      Features:      For measuring the alcohol content of various liquors or the sugar concentrations in alcohol-related wines.      Lightweight and portable, the alcohol refractometer is simple designed and easy to operate.      Adjustable manual focus for easily focus and calibrate.      Specifications:      Color: Black / Blue / Green / Red (Optional)      Material: ABS      Measuring Range: 0-80%      Accuracy: +/-0.1%      Package Weight: 90g