Designed to test the drying rate of textiles at their absorbent capacity, Chemwests DRTU/AF conforms to the specifications developed and copyrighted in 2012 by AATCC (American Association of Textile Chemists and Colorists) Committee RA63.

By employing the Air Flow Method(1), the drying rate of a textile is determined by the evaporation rate that occurs at its approximate absorbent capacity.

Our self contained module facilitates dry-rate measurement at absorbency for all types of fabrics(2) with a consistent repeatable testing process. The Dry Rate Testing Unit/Air Flow comes pre-programmed for easy operation, and programmable controller and touch screen with USB and Ethernet ports for downloading test results (see full list of specifications). Output results can be programmed for as low as one second intervals. Tests for absorbent capacity, for dry rates, records and downloads test data.

  • Determines the drying rate of a fabric at the approximate absorbent capacity
  • Automated test unit for repeatability and consistent testing
  • Compact desktop design
  • Easy to use 6” touch screen
  • USB & Ethernet ports for data storage and easy transmittal to computer data files
  • Method is applicable to all types of fabrics, including knits, wovens, and non wovens2


  • Enclosure ~ White PVC-C (flame retardant and chemical resistant material, in accordance with Factory Mutual (FM) 4910
  • Door ~ Clear blue PVC
  • 6” Color Touch Screen
  • PLC controls
  • Adjustable leveling feet
  • UL 508a approved, GFI, Custom Electrical set up per jurisdiction
  • Temperature Recorder with capabilities to take readings every1 second, data storage, and transmittal to external data file
  • IR Thermocouple probe, temperature range of 15-50 +/- 0.1deg C
  • Adjustable Fan
  • Micropipette, adjustable volume, 0.100-1.000 +/- 0.003ml
  • Anemometer, Hot wire-type, capable of measuring air flow from 0.5-2.5 +/- 0.1m/s
  • USB to accommodate recording test output to thumb drive device
  • Ethernet port to facilitate direct connection of laptop/desktop
  • Dimensions – 12.5”L x 23.63”W x 15”H




Consistent repeatable testing mechanismCombined with a consistent laboratory environment, test unit provides a copy exact platform from unit to unit
Integrated designDesign merges critical components to test all fabric types(2)
6” color touch screen and PLC controlsEase of operation with easy to understand, simple pre programmed process. Capable of measurements @ 1 second intervals, data storage and transmitting
USB and Ethernet portsEasy access to download recorded test results to thumb drive or computer data file
Equipment Cooling FanFan adjusts to appropriate test air flow with additional capacity/durability
IR ThermocoupleProbe provides exacting temperature measurement
Bubble level and Leg levelersLevel and solid unit foundation
Compact designEconomical use of space in lab environment

1 Reference AATCC Test Method 200-2012, AATCC Technical Manual 2013 pp 398 – 400. Developed in 2012 by AATCC Committee RA63
2 Not for testing textiles taken from socks or hosiery, this method is limited to textiles tested on the non-face side – that exhibit a maximum absorbency time of 30 +/-2 s as measured by AATCC TM 79, Absorbency of Textiles (see(14.1). It is not applicable to textiles that exhibit absorbency of more that 30 +/- 2s.