Standard Test Method for Measuring Vapor Emission Rate (MVER) of Concrete Subfloor Using Anhydrous Calcium Chloride
- Apparatus – the kit plus a gram scale if you are doing the calculations, a thermometer (to measure room temperature), and hygrometer (to measure relative humidity)
- conditioning – site should be same temperature and humidity expected during normal use, but if not possible, then 75 + 10 degrees F (23.9 + 5.5 degrees C) and 50 + 10% relative humidity
- Preparation of areas to receive tests – area must be free of all foreign matter and curing agents must be removed at least 24 hours before the test is run
- Minimum of three tests for first 1,000 sqft and one additional test for each 1,000 sq ft
- Normal placement is one test near the center with others being placed around the perimeter of the room
This is a summary. For a copy of the latest version of the ASTM F1869 Standard Test Method for Measuring Moisture Vapor Emission Rate of Concrete Subfloor Using Anhydrous Calcium Chloride, contact ASTM International at: https://www.astm.org/Standards/F1869.htm