We're really sorry... We don't currently have that one in stock Please add your email and we'll notify you when it's back Email Home» All OptiShield Products» Chloramine T Additive Chloramine T Additive Chloramine T Additive Product ID 400901 A safe, effective, non-corrosive additive for use in re-circulating systems. Price$62.00 Add to cart A safe, effective, non-corrosive additive for use in re-circulating systems.