This optical refractometer is designed for checking the concentration of Antifreeze & Battery Acid but also handles Adblue Adblue is a urea additive in the exhaust flow which reduces NOxemissions in HGVs & Light Commercials A refractometer can check these additives with just a small amount of fluid Measures Ethylene Glycol Propylene Glycol Battery Fluid Density Adblue Optical reading
Includes:: Refractometer Precision Screwdriver & Dropper