In-Situ Moisture Measurement for Concrete Slabs;
Non-Destructive Moisture Measurement for Concrete Slabs
Calcium Chloride tests are still in use in North America and are a more economical way of testing moisture levels in concrete if you do not do this often
ASTM F2170-11 RH In-situ Concrete Testing (drilling + 72 hr.)
ASTM F1869 Calcium Chloride Test, Vapour Emission Rate
ASTM 2659 Non Destructive Concrete Testing “CMEX2”