scope:

This International Standard specifies four methods of test oftextile floor coverings (with or without an underlay, see Clause 9)using the Lisson Tretrad machine. ? test A: determination of massloss of textile floor coverings, also used to assess fibre bind ofsynthetic pile carpets; ? test B: determination of stair nosingappearance change of textile floor coverings; ? test C:determination of fibre bind on synthetic loop pile carpets; ? testD: determination of fibre bind (hairiness) on needled floorcoverings and floor coverings without pile.