Test Method: SATRA TM274

Water vapour permeability of clothing membrane materials

June 2010

SCOPE

This method is intended to determine the amount of water vapour an assembly or a single material will absorb and transmit through its structure in a specified time. The method is mainly applicable to materials incorporating microporous and hydrophilic permeable membranes used in clothing.

PRINCIPLE

An assembly of circular test specimens is clamped across the open end of a vertical cylindrical chamber containing a specified volume of warm water. After a set time the mass of water absorbed by, and transmitted through, the test specimens is measured. The test is designed to give a measure of the ability of a material to remove perspiration from the skin.

REFERENCES

This Test Method does not reference any additional Standards or Test Methods.

HISTORY

First issued February 2002. Revised June 2010.

AVAILABILITY

This test method is available to members and non-members.

PRICE (ex. VAT)

This price is for a printed copy of the Test Method.

• Members: £75
• Non-members: £215

TYPE

• Water transmission

USAGES

• Textiles and coated textiles, including synthetic uppers and linings