Pests & FacilitiesCâu 130 / 240
What is the correct concentration range for a chlorine (bleach) sanitizing solution?
a.500 to 1000 ppm
b.50 to 100 ppm
c.2000 ppm or higher
d.5 to 10 ppm
Giải thích
A chlorine sanitizer for food-contact surfaces should be about 50 to 100 ppm. Too little (5-10 ppm) will not sanitize, and too much (500+ ppm) is a toxic chemical hazard and can corrode surfaces. Test strips must be used to verify the concentration.
Luyện miễn phí toàn bộ 240 câu hỏi — không cần đăng ký.
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