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1. Is it necessary to know the TDS?

Dear Sir,
I purchased an Aquaguard RO system few days back and I analysed some of the parameters. The following are the observations: pH - 7.42, Chloride is present, sulphate is absent and the hardness of water was found to be 45.1 mg/L.
Then TDS availability is not known. Today we had given the sample for microbial testing and is under process.

Do we need to know the TDS quantity?
Awating your reply

Thanks
Anil Kumar Jha
QC Chemist (Pharma Industries)

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