Problem #7: A domestic sewage analysis was carried out for solid analysis. The test was performed using a sample size of 50 mL. Determine the concentration of total solids, total volatile and fixed solids suspended, volatile suspended solids and fixed suspended solids. The information is as. Mass of empty evaporating dish 53.5433 g; Mass of empty evaporating dish + residue after evaporation =53.5793 g; Mass of empty evaporating dish + residue after ignition =53.5742 g Mass of empty filter =1.5433 g; Mass of filter after drying = 1.5553 g; Mass of filter at ignition 1.5531 g.