PURPOSE
- To lay down the procedure for determining the total suspended solids in water samples.
- A well-mixed sample is filtered through a weighed standard Whatman filter and the residue retained on the filter is dried to a constant weight at 103 to 105ºC. The increase in the weight of the filter paper represents the Total Suspended Solids
APPARATUS
Whatman Filter Paper
Oven for drying
Analytical Balance
100 ml measuring cylinder
Desiccator
PROCEDURE
- Sample 100 ml of water in a clean previously dried conical flask.
- Take a piece of Whatman filter paper and keep it on drying at 100ºC for 15 to 20 min
- Take the initial weight of Whatman filter paper that is (A)
- Filter the sample through the Whatman filter paper.
- Keep it for drying the filter paper at 100ºC for 1 hr in an Oven.
- Cool the paper in the desiccator to balance the temperature.
- Weigh the filter paper immediately after drying. (B)
CALCULATION
Weight of the paper. - A
Weight of the paper + sample after drying - B
Volume of the sample - 100ml
REFERENCE
American Public Health Association page number 2-57 to 2-58
ALSO READ: General Test Procedure for Loss On Drying
Tags
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