- Color: As Shown - Material: Aluminum + Rubber - Size: 17 x 4 x 4 cm - Measuring Range: - Ethylene Glycol: 50°C to 0°C, Level C - Propylene Glycol: 50°C to 0°C, Level C - Cleaning Agents: 40°C to 0°C, Level C - Battery Liquid: 1.100–1.400 sg - Resolution Factor: - Ethylene Glycol: 5°C - Propylene Glycol: 5°C - Cleaning Agents: 10°C - Battery Liquids: 0.01 sg - (ATC) Temperature Compensation Range: 10°C to 30°C - Provides accurate measurement with proper calibration. Calibrate the refractometer before first use. Frequent calibration is not required; once every few months is sufficient. When applying the sample to the daylight plate, ensure the liquid covers the entire surface evenly without air bubbles or dry spots. - Clean the instrument with a soft cloth after each use. Keep the refractometer dry and clean to maintain accuracy and durability. Do not submerge the instrument in water, as this may cause internal fogging or rust. Avoid loosening any connecting parts and prevent dropping, impact, or strong shaking. - Features a temperature unit in °C. The scale indicates the percentage concentration of ethylene glycol or propylene glycol for coolant and antifreeze solutions. - Can be used to test the concentration of ethylene glycol or propylene glycol in antifreeze liquids. - Includes an additional scale for measuring the freezing point of windshield cleaning fluid. - Equipped with ATC (Automatic Temperature Compensation), which automatically adjusts for temperature variations during use.