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 1237.2 - Fire Resistance

(Large Scale Test). The treated fabric, both before and after water extraction, shall be tested in accordance with the method outlined in Section 1237.3 below, and shall not continue to flame for more than two (2) seconds after the burner is removed. The vertical spread of flame and afterglow (smoldering combustion), as indicated by the length of char above the tip of the test flame, shall not exceed ten inches (10").

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