When water is added to the system or when minimum coolant does not get done, pH levels can rise or fall and contaminants (Sulfate and Chloride) can rise to unacceptable levels. The Cool Check Coolant Quality Test Strips, No. 3300, from Acustrip help technicians test seemingly good antifreeze for quality and contaminants. In a matter of minutes the pH, Sulfate and Chloride levels in a coolant can be determined. If the antifreeze fails the test, a cooling system service can be recommended to the customer. Strips come in bottles of 10 test strips.