1. Analysis for Total Solids Pan of a known mass (M pan ) filled with a known volume of sample H2OH2O Pan of a known mass with the mass of solids from the aqueous sample (M pan + M solids ) Oven at 103  C M solids = (M pan + M solids ) - (M pan )

2. Analysis for Total Volatile and Non-Volatile Solids VS Pan of a known mass with the mass of solids from the aqueous sample (M pan + M solids ) Pan of a known mass with the mass of non-volatile solids from the aqueous sample (M pan + M NVS ) Furnace at 550  C M NVS = (M pan + M NVS ) - (M pan ) M VS = (M pan + M NVS ) - (M pan + M NVS )

3. Separation of Dissolved and Suspended Solids TSS TDS + H 2 O from sample + DI rinse water Sample + DI rinse water Sample of a known volume containing all solids (V sample ) Known volume(s) of DI rinse water (V DI ) Filtration Apparatus Filter of a known mass (M filter )

4. Analysis for Suspended Volatile and Non-Volatile Solids Filter of a known mass (M filter ) with mass of suspended solids (M SS ) and water (M H20 ) Oven at 103  C TSS H2OH2O Filter of a known mass with mass of suspended solids (M filter + M SS ) Furnace at 550  C NVSS TSS VSS TSS Filter of a known mass with mass of suspended solids (M filter + M SS ) Filter of a known mass with mass of non- volatile suspended solids (M filter + M NVSS ) (M SS ) = (M filter + M SS ) - (M filter ) (M NVSS ) = (M filter + M NVSS ) - (M filter ) (M VSS ) = (M filter + M SS ) - (M filter + M NVSS )

5. Analysis for Total Dissolved Solids Pan of a known mass filled with a known volume of sample from the filtration apparatus flask (M pan + M TDS + H 2 O from sample + DI rinse water) H2OH2O Pan of a known mass with the mass of all dissolved solids from the aqueous filtrate sample (M pan + M TDS ) Oven at 103  C + Oven at 180  C (M TDS ) = (M pan + M TDS ) - (M pan ) * IMPORTANT * You must account for the dilution of the sample with DI water when calculating any of the dissolved solids concentrations.

6. Analysis for Dissolved Volatile and Non-Volatile Solids VDS Furnace at 550  C Pan of a known mass with the mass of all dissolved solids from the aqueous filtrate sample (M pan + M TDS ) Pan of a known mass with the mass of non- volatile dissolved solids from the aqueous filtrate sample (M pan + M NVDS ) (M NVDS ) = (M filter + M NVDS ) - (M filter ) (M VDS ) = (M filter + M TDS ) - (M filter + M NVDS ) * IMPORTANT * You must account for the dilution of the sample with DI water when calculating any of the dissolved solids concentrations.