Facilities, Cleaning & PestsQuestion 484 of 500
A three-compartment sink runs a 50 mg/L chlorine solution at 100°F with a pH of 10 or less. What is the minimum contact time?
a.At least 3 seconds
b.At least 5 seconds
c.At least 10 seconds
d.At least 7 seconds
Explanation
The Food Code allows a 7-second contact time specifically for a chlorine solution of 50 mg/L at a pH of 10 or less and a temperature of at least 100°F, or a pH of 8 or less at a temperature of at least 75°F. A chlorine solution outside those conditions needs at least 10 seconds, and other chemical sanitizers need at least 30.
Law Reference: FDA Food Code §4-703.11Practice all 500 questions free — no signup required.
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