... light, heat, ph and other affected IntroductionDouble strands quaternary ammonium salt forms the elelctrovalent bond conjugating it’s positive charge ... 4, stable, free from light, heat, organic matter, water hardness, in acid, alkaline (high ammonia) environment has very strong disinfection ... disinfection1:1000Spraying, washing disinfectant materials&Double strands quaternary ammonium salt solution