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.
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