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Food & Lab

Water Activity



Sensor Type

Tunable diode laser

Water Activity Accuracy

±0.005 @ 25 ◦C

Water Activity Resolution

0.0001 aw

Water Activity Range

0.000 − 1.000 aw

Water Activity Repeatability

0.001 aw

Read Time*

≤ 5 min

Temperature Control

25 ◦C standard; 15 to 50 ◦C (with calibration)

Temperature Adjustment Increment

1 ◦C

Sample Temperature Accuracy*

±0.2 ◦C

Sample Temperature Resolution

0.01 ◦C

Temperature Stability

User-selectable range, internal thermoelectric controlled

Sample Dish Capacity

7.5 ml recommended (15 ml full)

Program Identification

Alphanumeric, programmable to display product name, lot, or product ID number

Data Storage

8,000 readings

Data Communications



128 x 64 pixel graphical display with backlighting

Case Dimensions

26.7 x 17.8 x 12.7 cm

Case Material

Machined aluminum frame; Lustran 433 (ABS) with fire retardant


3.1 Kg (6.83 lbs.); instrument only: 6.55lb = 2.97 kg


110 to 220 VAC, 50/60 Hz warranty: one year parts and labor

Operating Environment

4 to 50 ◦C; 90% relative humidity (noncondensing)




One year parts and labor


*AQUALAB TDL is calibrated to a NIST traceable temperature standard.