* 99% Sodium dichloro-s-triazinetrione dihydrate * Available Chlorine: 56% * Totally soluble and quick dissolving, Chlorinating Concentrate is a stabilized chlorinating concentrate in granular form with 56% available chlorine. The product is effective for use as a primary sanitizer or shock treatment. * Quick Dissolving Stabilized Chlorinating Granules * Restores Water Clarity * For All Pool Types