1.1 Scope. 1.1.1 This standard shall determine and quantify the flammability characteristics of materials containing polymers that are used in cleanroom applications. 1.1.1.1 The propensity of these materials to support fire propagation, as well as other flammability characteristics, are quantified by means of a fire propagation apparatus. 1.1.1.2 Measurements obtained include time to ignition (tign), chemical (Q?chem), and convective (Q?c)?heat release rates, mass loss rates ?m??, and smoke extinction coefficient (D). 1.1.2 This standard includes the following separate test methods: (1) The ignition test, which shall be used for the determination of tign (2) The combustion test, which shall be used for the determination of Q?chem, Q?c, m?, and D (3) The fire propagation test, which shall be used for the determination of Q?chem from burning of a vertical specimen