This document specifies a method for the determination of the effect of antibacterial treatments applied to woven, knitted and other flat textiles.This method is applicable to testing hygienic finishes of hydrophilic, air-permeable materials or antibacterial products incorporated in the fibre. A minimum diffusion of the antibacterial treatment into the test agar is necessary with this procedure.Note: Other materials may be tested using this method, provided that it is adapted accordingly.This method is not suitable for testing textiles treated with antibacterial treatments that react with the agar.