250 mL of Adyar Sewage river was taken.The odour of the sewge water was not good. 5 ...
Vasu Chemical Industries 2018-06-20T06:49:18 2018-06-20T06:49:18
Vasu Chemical Industries
250 mL of Adyar Sewage river was taken.The odour of the sewge water was not good. 5 mL of sodium hy