Cơ sở, Vệ sinh & Côn trùngCâu 305 / 320
A manager tests the chlorine sanitizer in the third sink and the test strip reads 200 ppm. What should the manager do?
a.Use it as is; more chlorine is always better
b.Add more chlorine to reach 300 ppm
c.Skip testing next time to save strips
d.Dilute the solution to bring it back into the 50 to 100 ppm range before sanitizing
Giải thích
At 200 ppm the chlorine concentration is above the effective 50 to 100 ppm range, which can be corrosive, leave residue, and is not necessary for sanitizing. The manager should add water to dilute it back into range and retest. Too-strong sanitizer is a real hazard, not extra insurance, so accurate mixing and testing matter.
Trích dẫn luật: FDA Food Code §4-501.114Luyện miễn phí toàn bộ 320 câu hỏi — không cần đăng ký.
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