2. Any covering fabric which has been treated with a fire-retardant chemical to reduce the ignitability of the upholstery shall, before it is conditioned in accordance with clause 7.1 of B.S. 5852: Part 1 be subjected to the water-soaking procedure set out in clauses 4.2 to 4.5 of B.S. 5651, save that for the second subclause of clause 4.5 there shall be substituted the following:
“After 30 minutes, remove the specimen, rinse in water (4.2.1) using a liquor ratio of 1:20 for 2 minutes, and then dry the specimen by any method suitable for the fabric type.”