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Controlled Document TDS.html Version 1.3 Last Modified 02/11/11
Method Statement for the Determination of Total Dissolved Solids
The procedure described herein outlines the determination of total dissolved solids in water samples by gravimetric analysis..
Water samples of known volume are evaporated at 175°C in a pre-weighed beaker and the dry weight is recorded. The measured weight change is the total dissolved solids in the volume of sample.
Analytical quality control is maintained by a number of measures: