(Small Scale Test.) The treated fabric, in its original state, after accelerated weathering, and after water extraction, shall be tested in accordance with the method outlined in Section 1237.1 below, and shall not continue to flame for more than two (2) seconds after the burner is removed. The average length of char (for the standard test fabric) shall not exceed three and one-half inches (3 1/2"). The maximum for any fabric shall not exceed six inches (6").
Cal. Code Regs. Tit. 19, § 1237