To make 1 gallon of 0.028% solution of hypochlorous acid (HOCl) using 5.25% liquid sodium hypochlorite (NaClO), you will need to follow these steps:
Obtain a clean, empty container that can hold at least 1 gallon of liquid.
Measure out 78 ml of 5.25% liquid sodium hypochlorite (NaClO).
Slowly...