Decontamination第 23 / 100 题
Instruments are coming out of the washer with a chalky white film. Water testing shows high hardness. What is the appropriate corrective action?
a.Increase the alkaline detergent concentration to dissolve the film
b.Extend the wash phase by ten minutes on every cycle
c.Address water quality with treatment such as softening or deionization, and use a descaling product as directed for existing deposits
d.Lower the final rinse temperature so minerals stay in solution
解析
A white chalky film is mineral scale from hard water depositing during rinsing and drying, and the durable fix is treating the water supply, with an acidic descaler used per manufacturer instructions to remove existing buildup. Adding alkaline detergent does not dissolve mineral scale and risks damaging aluminum. Longer wash times and cooler rinses do not change the mineral content of the water.
法律依据: AAMI ST79免费刷完整 100 道题库 — 无需注册。
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