Water activity / Moisture

Water Activity Meter - Aqualab 3

Lightning-fast total moisture analysis to tighten process control and boost quality. Combine moisture content and water activity in one device

The speed challenge
Normally, measuring water activity takes a significant amount of time. The sample must come to equilibrium with the air in the headspace above the sample before a reading can be taken. Depending on the sample, that can take 2-5 minutes—even longer for coated products, products high in fat, or volatile compounds. There hasn’t been a way around “equilibrium time” or “dwell time.”  Until now.

Fast answers, no waiting
The new AQUALAB 3 breaks the speed barrier. Using SKALA-powered predictive AI, it delivers both water activity and moisture content readings on a single sample in one minute, even when measuring volatile compounds.

Clear shipments quickly
AQUALAB 3 lets you know within one minute whether the batch will pass or fail.  Quickly test as many samples as you need to establish a robust testing protocol and accurately predict in-package water activity. Don’t wait for answers—clear shipments quickly and avoid logistical snarls.

Avoid rework and scrapped batches
Make fast decisions at the line to address issues before your process goes out of control. Get “outside operating limits” indicators within 60 seconds and use the predicted final values to adjust belt speed, oven temperatures, water content in dough, and other parameters before they result in rework or scrap. Fast water activity measurements offer the most precise way to monitor and control moisture at the line.

Speed changes everything
One minute water activity offers options you’ve never had before for robust and rapid pass/fail determination, tighter process control capability, and rock-solid indicators to clear shipments on time.

  • Fast: water activity readings in 1 minute.
  • Easy to use: precise measurements, minimal training
  • Expandable: connect and manage multiple AQUALAB 3 instruments with one iPad
  • Repeatable: certified standards for repeatability across users and locations
  • Multiple reading types: simultaneous moisture content readings
  • Optional block exchange program includes annual recalibration, extended warranty, and service plan


Measurement Range Water Activity 0.030 to 1.000
Resolution +/- 0.001
Accuracy +/- 0.005
Sample Time Approx 5 Mins
Sample Size Up to 15 ml
Sample Type Powder, Liquid or Solid
Sample Temperature Control 15°C to 35 °C

Input Mains 110/240 VAC
Sensor Type Chilled Mirror Dew Point
Warranty 1 year parts and labour

Automated data collection. No writing, no typing, no data entry. Each piece of data is automatically tagged with technician's name, date, time, instrument serial number and more

Audit-ready readings. Fully documented, audit-ready testing records (Conforms to CFR 21 Part 11; SQF and BRC compliant)

Instant visual pass/fail feedback. Reading is tagged to a specific product and checked against specifications visual alerts for pass, outside control limits and fail

CofAs in 30 seconds or less. Certificates of analysis are generated directly from the documented instrument reading. Just 2 clicks.

Request A Quote Download Brochure