pH Test Strips - Very Accurate & easy to use,100 strips per box.

pH tells you whether your machine coolant is acid or caustic.  Either one can promote bacteria growth and affect skin.  You need to keep your machine coolant at the proper pH with water and additives.  

The indicators in colorpHast® strips give you such sharp, clear color changes, it's easy to make accurate readings. All you have to do is dip the paper in the machine coolant and match the color scale on the side of the colorpHast® package to the pH strip.

Recommended Storage of this product to maintain accuracy: Store in a dry low-lit area free from heat and humidity.

WARNING: Cancer and Reproductive Harm—www.P65Warnings.ca.gov