Moisture vapor test kit in living room

Calcium chloride moisture test setup

Weighing a desiccant after 72 hours

Calcium Chloride (MVER) Moisture Vapor Emission Testing (Concrete / Substrates)

Floor Detective® Claims and Conditions Guide

Summary

Calcium chloride testing, commonly referred to as Moisture Vapor Emission Rate (MVER) testing, is a surface-based method used to evaluate the rate of moisture vapor emission from a concrete slab prior to flooring installation. The test measures the amount of moisture absorbed by a desiccant material over a defined period, typically 60 to 72 hours. Results are expressed in pounds of moisture per 1,000 square feet per 24 hours. MVER testing reflects

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