SpaGuard’s Chlorinating Concentrate provides spa owners with the sanitizing power of chlorine in a quick-dissolving granular form, making application quick and easy. Add to spa water while the pump is running, and they dissolve entirely to start disinfecting your spa. Chlorinating Concentrate is also pH neutral to ensure no effect on your chemically-balanced spa water. Use this concentrate in regular doses as a sanitizer, and in shock doses as an oxidizer.