KES-F8Air Permeability Tester

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  • KES-F8 Air Permeability Tester
  • KES-F8 Air Permeability Tester

The KES-F8 Air Permeability Tester is designed to quickly and accurately measure the breathability and permeability of a wide range of samples, from those with high permeability, such as stockings, to those with low permeability, such as synthetic leather.

Samples can be mounted in just a few seconds using the handle, and measuring is also incredibly simple.


  • Highly accurate measurement using the constant ventilation method

    The KES-F8 allows measurement of ventilation resistance. Compared with commonly used measuring methods, the KES-F8 is capable of highly accurate measurements. In addition, measurements can also be obtained with minute amounts of ventilation (measurement conditions similar to ventilation conditions when clothes are worn).

Example of Measurement Samples

  • Textile (Gauze, Stockings, Cotton, Socks, Underwear, Heat insulating material)
  • Non-woven fabric (Sanitary goods)
  • Paper (Tissue)


Product Name
Air Permeability Tester
Dimensions (W × D × H) *approx. Measuring unit: 330 × 495 × 430 mm
Weight *approx. Measuring unit: 25 kg
Power supply, Frequency 100VAC, 50/60Hz
Interface Data logger output terminal
Sample size 50 × 50 to 100 × 100 mm (standard)
Thickness: 1 mm (max.)
*Other sample sizes are able to be used with optional accessories.

Optional Accessories

Vent pressing plate
(20 πcm², 0.2 πcm²)
Vent sizes are variable.
Attachment provided for thick samples To thickness 40 mm
*Please contact us for more information.

Measurement Data

Ventilation resistance R (kPa·s/m) Smaller values mean higher breathability and permeability.

KES (Kawabata Evaluation System)
The Kawabata Evaluation System, centered on Sueo Kawabata, a professor at Kyoto University, and Masako Niwa, a professor at Nara Women’s University, is an objective evaluation method for measuring the texture of clothing fabrics based on the “The Standardization and Analysis of Hand Evaluation” provided by the Hand Evaluation and Standardization Committee of the Textile Machinery Society of Japan.


We offer free sampling services, "for a deeper understanding of our products", "for confirming the measured data that can be obtained", and "to prepare the data necessary for submission of internal approval documents". Please feel free to contact us.