... look of black powder. Its smaller particle size provides quicker rate of adsorption which reduces the amount of contact time required.Foodgrade Woood Powder Activated ... agent injection, purified, refined. For the pharmaceutical industry, such as antibiotics, streptomycin, lincomycin, gentamicin, penicillin, chloramphenicol, methyl ammonium, alkaloids, hormones, ibuprofen, paracetamol ...