Many disinfectants are dependent on a narrow pH range. Biotab7 is not affected by pH. from 2-11.
For example, the pH dependent speciation of chlorine produces hypochlorite ion and hypochlorous acid (HOCl). Hypochlorite is only 1/30 to 1/200 as effective as HOCl.
Biotab7 being a neutral species with rapid disinfection kinetics is 100% available in hard and soft water.