The three-inch Accu-Tab SI (scale inhibitor) calcium hypochlorite tablets are specifically formulated to help prevent scale formation inside the chlorination chamber, especially in hard-water areas. Engineered to perform reliably and consistently, the tablets are pressed rather than formed, ensuring their physical integrity and eliminating brittleness and extensive breakage.

Accu-Tab tablets are NSF-listed along with the chlorinator and, when used together, maintain the limited warranty of the Accu-Tab system.