Lowers ph levelsPrevents scale build upActive ingredient- sulfuric acid, monosodium salt 91.5-94.7-percent
The HTH 3-pound Spa PH Decreaser lowers pH and prevents scale build up. Contains active ingredient- Sulfuric Acid, Monosodium Salt 91-1/2-94.7-percent
Brand: HTH, Model: 86226, Size: 2 Lb.