Computer · Environmental Engineering
मानक जल गुणवत्ता परीक्षण दिशानिर्देशों के अनुसार, एकत्रित पानी के नमूने के भौतिक मापदंडों जैसे रंग और मटमैलेपन (turbidity) का परीक्षण आदर्श रूप से संग्रह के कितने घंटों के भीतर किया जाना चाहिए?
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