Questions Most Often Asked about CoolTrak® Test Strips

Do test strips really work?
Yes. Test strips were originally developed in the medical diagnostic industry by Miles, Inc. in the 1960’s. Today, they are the medical standard for urinalysis and blood chemistry analysis. ETS was created by Miles to develop industrial applications for these tests. CoolTrak® is a direct application of this technology.

What is freezepoint?
The temperatures at which the fist crystals of ice form in the coolant solution. This is often confused with “burst point.” Burst point is the temperature at which the coolant mixture freezes solid. A 50/50 coolant/water mixture has a freeze point of approximately –30°F and a burst point of –52°F.

What is coolant pH?
Simply stated, pH is the measure of the degree of acidity or alkalinity in a coolant. The acidity decreases and the alkalinity increases as the pH goes from 0 to 14. The recommended pH range for coolants is on the slight alkaline side, from 7.5 to 11. Anything at 11 and above would be considered too high. Tests that range from 6.0 up to 7.5 would be considered too low. The pH of fresh coolant slowly decreases with time and use in a cooling system as acids are formed by the oxidation of ethylene or propylene glycol. At low pH ranges, certain metal surfaces are susceptible to acid corrosion, while at high alkaline pH, aluminum surfaces are susceptible to corrosion. Thus, it is important to check the coolant pH periodically to make sure that it is neither too acidic nor too alkaline.

What if a person is colorblind?
Studies have shown that people who are colorblind can read test strips as accurately as anyone else. Color perception is relative. People with color blindness can distinguish between varying hues or intensities of color, even if they perceive them as scales of gray.

Will CoolTrak work in propylene glycol (PG) coolants?
Yes. The CoolTrak chemistry is specific to either glycol: PG or EG. The test will also work if EG and PG are mixed together in the same system. However, Red or Orange Dyed Coolants will affect an accurate pH reading, and is NOT recommended for use.

Does the coolant have to be at room temperature?
To get reliable test results, the coolant must be between 50 degrees F and 140 degrees F. IF the engine is hot, take a sample out of the overflow tank. Or, drain a small amount out of the radiator and set aside to cool. A tablespoon of coolant will coool in just a matter of minutes.

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