Phone Number
8:00 AM - 5:00 PM
Hours of Operation
Email Address
Request A Quote

W.A.M. Water Activity Meter

Download Brochure

If there is “too much” water in a food product, there is a risk of microbial growth & water migration. This can lead to clumping, changes in consistency & reduced shelf life. Manufactures of food & pharmaceutical products measure water activity to show when the water activity of their product has declined to a point where bacteria can no longer grow. This type of measurement is also a good indicator of when the product is ready for packaging. Water Activity is expressed as “aw”. It is actually a ratio between the vapor pressure of the food itself when in a completely undisturbed balance with the surrounding air media & the vapor pressure of distilled water under identical conditions. A Water Activity of 0.80 means that the vapor pressure of the food is 80% that of pure water.


  • This is a Portable Water Activity Meter, with a Weight of Only
    100g, Lighter than a Mobile Phone & a Precision of 0.02 aw, Easy
    to Measure Water Activity Anytime & Anywhere
  • Fast Test, Measurement of Water Activity in 5 Minutes
  • Easy Reading, Water Activity & Temperature of the Samples
    Displayed Together
  • Functions: Automatic Shutdown, Manual Shutdown & Alarm
    for Undervoltage
  • Use USB Data Output to Connect with PC
  • Provides Bluetooth Data Output Choice

Additional Information

6-bit Backlight LCD Digital Display (3-bit Humidity aw, 3-bit Temperature Display)
Non Conductive Humidity Sensor
Sampling Time
5 Minutes
Operation Conditions:
Temperature: 0~50ºC; Humidity: <95% RH
Power Supply
2 x 1.5V AAA Size (UM-4) Battery (Not Provided)
135mm x 70mm x 44mm
100g (Not Including Batteries)
Standard Accessories
Main Unit; 3 Sample Plates; Carrying Case; Manual
Optional Accessories
USB Data Cable with Software; Bluetooth Data Adapter with Software