How to determine Soluble COD of water sample?

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Ashutosh Kumar Choudhary

Filter the wastewater to remove the all suspended solids by filter paper (0.45um). Then calculate the COD of the wastewater sample as per APHA guidelines.

Mihir Herlekar

Thanks for your reply

Supriya Singh

Please refer the APHA. COD can be determined by oxidising the water sample with dicromate followed by titrating with Ferrous amm sulphate using ferroin indicator. Calculate as per oxygen used in the reaction.

Leila Djerrab

what is the difference between Total COD and soluble COD ?

Supriya Singh Ashutosh Kumar Choudhary