For WFI systems, the FDA Guide recommends sampling daily from a minimum of one point of use, with all points of use tested weekly.

对于注射用水系统，FDA指南建议至少每天要从一个用点取样，在一周之内将所有的用点都取到。

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Now, Tzu Chi Earth, our weekly guide to Tzu Chi's chapters and offices around the world.

现在，又到了慈济地球村，带你认识全球慈济各支会。

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