设施、清洁与虫害第 283 / 320 题
A dishwasher mixes a chlorine sanitizing solution for the third sink. What concentration and conditions are correct?
a.500 ppm chlorine at 40°F
b.10 ppm chlorine at any temperature
c.200 ppm chlorine at 120°F
d.50 to 100 ppm chlorine, water 55 to 100°F, contact time about 7 seconds
解析
A chlorine sanitizing solution should be roughly 50 to 100 ppm with water between 55 and 100°F and at least about 7 seconds of contact time. Too little chlorine will not sanitize, and too much can be unsafe and corrosive. Temperature matters because very cold water slows chlorine's action.
法律依据: FDA Food Code §4-501.114免费刷完整 320 道题库 — 无需注册。
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