residual count 中文意思是什麼
residual count
解釋
剩餘計數-
If the total bacterial count, escherichia coli and or vibrio cholerae of a water sample exceeds the acceptable standard, we would repeat water sampling exercise, immediately raise the free residual chlorine of pool water to 2 ppm and ensure that the ph is between 7. 2 and 7. 8 for at least one hour
如發現細菌含量超越指標，本署會立即抽取樣本再作測試，並即時將池水的氯剩餘量提高至2ppm為時最少1小時，並須維持池水在7 . 2至7 . 8的酸鹼度
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