Calcium Chloride Shown to Give False Readings – RH 5 of 21

Extensive testing concluded that, due to the unreliability of calcium chloride tests, there is no reliable correlation between calcium chloride readings (MVER) and relative humidity. Howard Kanare sums up the facts about the ASTM F1869 test method. This is video 5 of 21 from the Rapid RH^® Testing for Concrete Floors webinar.

Download the MVER vs. RH chart (PDF)

There are many reasons why calcium chloride moisture emission testing cannot do what a relative humidity test can accomplish. The bottom line is that RH testing is a far better predictor of whether or not a floor covering or coating on a concrete slab will succeed or fail. It is unnecessary to perform moisture emission tests in addition to relative humidity.

—Howard Kanare, Senior Principal Scientist, CTLGroup

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2009 Copyrighted material by CTLGroup. All rights reserved. Used with permission by Wagner Meters.