What is the connection between RH and MVER?

Not to put it too bluntly, but there isn’t one. MVER refers to Moisture Vapor Emission Rate and is determined by calcium chloride testing. A traditional “moisture test”, MVER is regulated by ASTM F1869 and has proven to be an unscientific and problematic test method, primarily because it tests only the surface conditions of a slab. In fact, calcium chloride testing has been specifically disallowed for lightweight concrete applications.

RH testing for concrete determines internal moisture levels of a concrete slab at 40% of its depth, as is covered in ASTM F2170. Because of the natural drying process of concrete, only accurate RH testing can determine the final moisture conditions of a slab if it were sealed (i.e., a floor covering installed) at that point in time. Our Rapid RH L6 is the latest in field-tested, scientifically-backed, industry-proven RH testing for concrete and flooring professionals.

You can learn more about the differences between RH testing and MVER at www.f1869.org.