Solids, Residue

Total: A well mixed sample is evaporated in a weighed porcelain dish and dried to constant weight in an oven at 180°C.

 
Suspended: A well mixed sample Is filtered through a weighed standard glassfiber filter and the residue retained on the filter is dried to a constant weight at 103-105°. 


Suspended, Volatile: A well mixed sample is filtered through a glass fiber filter. The residue retained on the filter is dried at 105°C to constant weight, then is ignited at 550°C. 
Total Volatile: A well mixed sample is evaporated, then dried to constant weight at 105°C and ignited at 550°C. 


Dissolved: A well mixed sample is filtered through a standard glass fiber filter, and the filtrate is evaporated to dryness in a weighed dish and dried to constant weight at 180°C.

(See Method Reference No. 49)

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Water Analysis