... retardant called Phos-Chek. This mixture primarily consists of water (85-88%), ammonium phosphate or polyphosphate salts, iron oxide for coloration, and gum thickeners. The… — Aaron
... retardant called Phos-Chek. This mixture primarily consists of water (85-88%), ammonium phosphate or polyphosphate salts, iron oxide for coloration, and gum thickeners. The… — Aaron