scope:

This European Standard specifies four methods of test of textile floor coverings (with or without an underlay, see clause 9) using the Lisson Tretrad machine. Test A: Determination of mass loss of textile floor coverings, also used to assess fibre bind of synthetic cut pile carpets. Test B: Determination of stair nosing appearance change of textile floor coverings. Test C: Determination of fibre bind on synthetic loop pile carpets. Test D: Determination of fibre bind (hairiness) on needled floor coverings.