Suppressants

The media or device which can eliminate the fire by reducing the heat, combustible materials, and amount of pressure change
Reference: Chemical Process Safety – Fundamentals with Applications, 2nd Ed., Daniel A. Crowl/Joseph F. Louvar
Substance contained in the HRD-Suppressor which, when dispersed into a volume to be protected, can arrest or prevent a developing explosion in that volume. Three categories of suppressants are in general use, separately or in combination (powder, water, chemical suppressants).
Reference: S2S (safety to safety website: prEN 14373:2002 (E)
Science/Flammability