Run down of ASTM F2170-11 Concrete Moisture Testing Standard

Product Update: The Rapid RH® 4.0 shown in this video has been replaced by the Rapid RH L6.

Jason Spangler, Vice President of Sales for Wagner Meters, discusses the Rapid RH 4.0 features and how they relate to ASTM F2170, as it stood in the 2011 revision.

Relative humidity testing is the modern alternative to the anhydrous calcium chloride test. Calcium chloride testing dates back to the 1940s, and over the decades flooring contractors watched moisture problems appear on slabs the test had cleared for installation. The recurring lesson was that the slabs had not been given enough time to dry.

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Last updated on August 18th, 2026

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