Concrete Moisture Meter: What is the C555

The C555 Concrete Moisture Meter from Wagner Meters gives a quick indication of high and low moisture zones, which helps you target where to place Rapid RH® sensors for in situ RH testing.

The C555 complies with ASTM F2659 as a “non-destructive electronic concrete moisture meter,” used for the “preliminary evaluation of the comparative moisture condition of concrete, gypsum cement, and other floor slabs and screeds.”

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Last updated on August 18th, 2026

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