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Example: The weight of an empty evaporating dish is determined to be 40.525g. After a water sample is filtered, 100mL of the sample is evaporated from the dish. The weight of the dish plus dried residue is found to be 40.545g. Compute the TDS concentration

                                                                      = 200mg/L

In drinking water, dissolved liquid may caused taste problems. Hardness, corrosion, or aesthetic problem may also accompany excessive TDS concentration. In wastewater analysis and water pollution control, the suspended retained on the filtered are of primary importance and are referred to as TOTAL SUSPENDED SOLID TSS.

The TSS concentration can be computed using the TDS equation,

where A represent the weight of the filtered plus retained solid

    B represent the weight of the clean filter

    C represent the volume of the sample filtered

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