Expert Quality, precision refractometer suitable for measuring Urea concentration in AdBlue° diesel exhaust fluid and will also measure anti - freeze strength. Focusable eyepiece and Automatic Temperature Corrected (ATC) prism ensures accuracy. Designed for use with standard ethylene glycol and propylene anti - freeze. Supplied with calibration screwdriver, calibration fluid, pipette and cleaning cloth. Packed in storage case. * Urea measuring range 0 to 40% * Anti-freeze measuring range 0 to -50°C https://elecena.pl/product/27248669/draper-expert-23193-adblue-xae-refractometer-kit 2024-11-12 https://elecena.pl/product/27248669/draper-expert-23193-adblue-xae-refractometer-kit 2026-04-14