free residual chlorine meaning in English
游离剩余氯
游离性余氯
Examples
- Free residual chlorine
游离性余氯 - 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
如发现细菌含量超越指标，本署会立即抽取样本再作测试，并即时将池水的氯剩馀量提高至2ppm为时最少1小时，并须维持池水在7 . 2至7 . 8的酸硷度