CAN/CGSB-4.2 No. 27.6-2023

1 Scope This National Standard of Canada: • determines the flame resistance of soft floor coverings when exposed to an ignition source (methenamine for timed burning tablet) under specified conditions; • establishes sampling plans and procedures to determine the acceptability with respect to the flame resistance of soft floor coverings using a sequential sampling procedure; • describes a procedure for the removal, prior to testing for flame resistance, of non-permanent flame-retardant treatments applied to soft floor coverings. It is applicable to all types of soft floor coverings, regardless of fibre type or method of construction. The testing and evaluation of a product against this standard may require the use of materials and/or equipment that could be hazardous. This standard does not purport to address all the safety aspects associated with its use. Anyone using this standard has the responsibility to consult the appropriate authorities and to establish appropriate health and safety practices in conjunction with any applicable regulatory requirements prior to its use. Units of measurement – Quantities and dimensions used in this standard are provided in units from the International System of Units (imperial equivalents may be shown in brackets). Exceptions may be permitted.