త్రాగేనీటిలో ఎంత మాత్రంలో లెడ్ (LEAD- Pb) & ఇతరటాక్సిక్ ఎలిమెంట్స్ ఉండవచ్చోఈ వీడియో చూసి తెలుసుకోండి

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  • เผยแพร่เมื่อ 6 ก.ย. 2024
  • ACCEPTABLE LIMITS OF TOXIC ELEMENTS IN DRINKING WATER - BUREAU OF INDIAN STANDARDS.
    correction In the Table "Toxic Elements" serial Number 5.Polychlorinated biphenyls-0.0005
    is repeated as serial number 10 also Please ignore serial number 10 data.

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