This tool measures the strength of AdBlue®, screen wash, battery fluid & antifreeze by measuring the refractive index of light passing through the mixture solution.

Suitable for artificial antifreeze mixtures featuring G13, aqueous/urea contents of AdBlue® & long life OAT (Organic Acid Technology).

Temperature corrected prism ensures accurate readings.

To calibrate use water. Eyepiece with adjustable focus.

Comes with pipette & storage box.