TOOL BOX W03

The refractometer contained in TOOL BOX W03 is a visual tester for service fluid quality. It provides a quick and accurate means of checking the resistance to freezing of coolant or windshield washer fluid. And it can also be used to measure electrolyte density in battery acid or the quality of AdBlue®.

Using the supplied pipette, transfer a few drops of the fluid to be checked onto the prism. Close the cover, hold the device up to the light and read off the value shown on the scale. It really is that simple.