Potassium bicarbonate & Urea Sophisticated (AKA Monnex), applied on class B and C fires. Simpler than all other powders resulting from its ability to decrepitate (where the powder breaks up into smaller sized particles) during the flame zone developing a bigger surface space totally free radical inhibition. Grey in coloration. https://cashkaqft.blogerus.com/51346174/top-fire-signage-secrets