Legacy AQUALAB Pa<sub>w</sub>kit Water Activity Meter

Legacy AQUALAB Pawkit Water Activity Meter


See our newest small water activity meter

Many of our small, fast-growing customers prefer the SKALA-connected AQ1 over the Pawkit. The AQ1 lets you manage costs and manage compliance.


  • Description

    Grab and go

    Designed for government inspectors and third-party auditors, the lightweight Pawkit is perfect for water activity spot checks on the go.

    How it works

    To make a measurement, flip back the sensor cover and fit the Pawkit over a standard AQUALAB sample cup. Push the button for a water activity reading in 5 minutes.

    With a limited ± 0.02 aw accuracy, the Pawkit should only be used to verify readings or where a higher accuracy reading is not critical.


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  • Details/Specs

    Portable water activity

    • Weighs 4 ounces
    • Pocket-sized—3.5 x 4 inches
    • Battery-operated
    • Easy two point calibration


    • No temperature control
    • Capacitance sensor limits accuracy to ± 0.02 aw


    Sensor type: Capacitance Sensor
    Water activity accuracy: ±0.02 aw
    Water activity resolution: 0.01
    Water activity range: 0.00 to 1.00 aw
    Sample temperature accuracy: ±0.2
    Sample temperature resolution: 0.1 ◦C
    Sample dish capacity: 7.5 ml Recommended (15 ml Full)
    Measurement time: Five minutes
    display: 6-digit Custom LCD with symbols (3-digit aw and 3-digit temp)
    Case dimensions: 6.6 x 10.7 x 2.0 cm (2.60 x 4.21 x 0.79 in)
    Case material: Stainless steel and Valox 325 plastic
    Weight: 115 g (4 oz)
    Power: 2 to 3 V Li coin cells (three year typical life)
    Operating environment: 4 to 50 ◦C; 0 to 90% relative humidity (non-condensing)
    Certifications: CE; AOAC Approved method for measurement of aw
    Warranty: One year parts and labor

  • Comparisons


    Water Activity MeterTDL Water Activity MeterSeries 4 TEVSeries 4 TEPawkit
    Sensor TypeTunable Diode LaserCapacitance and Chilled Mirror DewpointChilled Mirror DewpointCapacitance Sensor
    Range0.030 to 1.000 aw0.030 to 1.000 aw0.030 to 1.000 aw0.0 to 1.0aw
    Measurement Time<5 minutes<5 minutes<5 minutes5 minutes
    Temperature ControlInternal 15-50 °C ±0.2 °CInternal 15-50 °C ±0.2 °CInternal 15-50 °C ±0.2 °CNone
    Part 11 ComplianceYesYesYesNo
    Warranty1 year parts and labor1 year parts and labor1 year parts and labor1 year parts and labor
  • Accessories

    Verification Standards

    Use to check your instrument daily. Standards are salt solutions with specific molality and water activity (See your operator’s manual for available molalities and water activities.)

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    See more accessories

  • Manuals and software
  • Pawkit Video

  • Pawkit cleaning video


Looking for a full-featured benchtop?

The AQUALAB's 4TE’s dew point sensor doesn’t take a “quick mode” reading or approximate water activity. It actually measures water activity with 0.003 accuracy in about 5 minutes.

Learn more about water activity

Get an introduction to water activity, learn about water activity and your specific product, explore the relationship between water activity and microbial growth, and much more.