Automotive RefractometerTests Coolant, Battery Acid, Screenwash and AdBlue using an optical prism test techniqueIncludes NEW internal Light feature for ease of use in poor lightCoolant †Tests both propylene and ethylene based antiâ€freeze coolant solutions and determines the freezing point•Battery Acid †indicates the specific gravity of the battery electrolyte•Screen Wash †shows the freezing point of screenwash fluids in degrees C•AdBlue –Indicates % concentration of AdBlue additiveSpecifications:Coolant: 0 to â€50° Battery: 1.1 to 1.4kg / ltrWindscreen: 0 to â€40° AdBlue: 30 –35%