California Code of Regulations
Title 19 - Public Safety
Division 1 - State Fire Marshal
Chapter 8 - Regulations Relating to Flame Retardant Chemicals, Fabrics and Application Concerns
Article 3 - Registration and Labeling of Chemicals
TEST REQUIREMENTS FOR EXTERIOR FLAME-RETARDANT CHEMICALS (WHEN APPLIED TO STANDARD TEST FABRIC)
Section 1237 - Fire Resistance

(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").

1. Repealer and new section filed 11-10-60; effective thirtieth day thereafter (Register 60, No. 23).