The moisture meter is a portable measuring device for water activity. Water activity indicates the amount of water that is biologically available for microorganisms such as bacteria, fungi, or similar. Each type of microorganism has a minimum water activity value below which no growth is possible. The higher the aw value of a food, the more perishable it is. Bacteria typically require a water activity of over 0.98, but significantly lower water activity of up to 0.6 can be tolerated by extremely halophilic bacteria, for example.
 
Feature: 
- Measurement range: 0.01 ... 1 aw
- Resolution: 0.01 aw
- Accuracy: ±0.03 aw
- Backlight LCD display
- Includes sample trays