CAN/CGSB-4.2 No. 27.5-2023

Scope This National Standard of Canada determines the flame spread properties of a textile product when a specimen is supported at an angle of 45° and a flame is applied to its surface for 1 s. It also describes the dry cleaning and laundering procedures for removing non-permanent flame-retardant treatments applied to textile products. The testing and evaluation of a product against this method may require the use of materials and/or equipment that could be hazardous. This document does not purport to address all the safety aspects associated with its use. Anyone using this method 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 use. Units of measurement – Quantities and dimensions used in this standard are provided in units from the International System of Units (SI units) with the exception of copyrighted figure A.5 where number of tufts is expressed in inch.