Hasa 76121 1 qt Bottle Super Stain-Out 12 per case. Super Stain-Out is a highly concentrated sequestering agent that suspends copper, iron, manganese and calcium in solution. When used as part of the startup and regular maintenance program, the pool finish, pipes, equipment and other surfaces are protected from staining and scaling. Super Stain-Out is compatible with bromine, chlorine, biguanide, ozone, and saltwater systems and may be used for all types of swimming pool finishes fiberglass, vinyl, white or colored plaster, etc.