Infection Control & SafetyQuestion 373 of 484
BBC Health & Safety guidance considers a 10% household bleach solution to be equivalent to approximately how many parts per million (ppm) of available chlorine?
a.50 ppm
b.500 ppm
c.5,000 ppm
d.50,000 ppm
Explanation
Standard household bleach is ~5.25% sodium hypochlorite (~52,500 ppm). A 1:10 dilution (10% bleach) yields roughly 5,000 ppm available chlorine, the level recommended for disinfecting blood spills.
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