what is the ppm in household bleach
of household bleach diluted to approximately 5,000 parts-per-million (ppm) available chlorine [1,2]. Stock household bleach is 5.25% sodium hypochlorite equal to approximately 50,000 ppm available chlorine; therefore, it must be diluted to 10% with water (or expressed as a ratio, 9 parts water to 1 part bleach) to arrive at the recommended 5,000