Our HTS Turbo Oxidizer is 38% Potassium Peroxymonosulfate and designed to remove biologic waste materials & other irritants from your spa water. It is formulated to work with our Serum Total Maintenance, as part of our system of products, to maintain clear, clean spa water. Turbo Oxidizer comes in a 5 lb. bottle and is compatible with bromine & chlorine sanitizers. Note that HTS Turbo Oxidizer is not compatible with biguanide sanitizing systems.