Monitoring Water Activity in Buildings
Do you use a universal dryness metric to communicate to insurance adjusters, your colleagues, and your customers? Do you have confidence in the metric you use and its ability to help you determine the likelihood of mold growth for every material?
There is a quite a bit of confusion in the indoor air quality, industrial hygiene, and water damage restoration worlds in terms of moisture and how to measure it. Moisture content and relative humidity are typically the measurements of choice. However, confusion exists on which moisture levels are optimal to preclude the growth
Moisture Content is Relative
Many people try to use moisture content. But even though every moisture meter has some kind of calibration ￼mechanism, scientifically speaking, moisture content is a relative measurement. There’s no independently ￼verifiable zero to the moisture content scale, so there’s no independent standard to calibrate moisture content ￼meters or methods to each other.
￼Water Activity is Absolute
By contrast, water activity is an absolute measurement. Saturated salt solutions have known water activity values. Any chemist can mix one up; any scientist will agree on what its water activity is. To learn more about water activity and its future as a dry standard in buildings, go to http://www.iaqradio.com/ and listen to Episode 294- "What is aw & Why is it important?"
Yardstick for Dryness and Dampness
See how the Surface Water Activity and Humidity Sensors can help you monitor buildings to inhibit mold growth.