(Sodium Dichloro Iso Cyanurate ûPowder) NaDCC - Powder used for water disinfectant 5gm can yield 3gm of free chlorine treat 3000 lit at 1PPM or 1500Lit at 2PPM. Used regularly, eliminates Algae growth and presence of any pathogen. Available in packages of 100gm, 250gm, 1kg, 40/50kg.