A 200 mL waste water sample was analyzed for different parameters. Sample was firstly passed through nonflammable filter- crucible assembly (weight: 25.439 g) and the assembly was dried (at 105 °C) to constant mass of 25.645 g. A 100 mL filtrate was placed in an evaporation dish assembly (weight: 275.419 g) and dried to 276.227g. Both crucible and evaporation dish assembly were placed in muffle furnace (at 550 °C) for an hour. Mass of crucible and evaporation dish assembly was measured to be 25.01 g and 275.944 g respectively. Determine dissolve solid, suspended solid, suspended volatile solid and dissolve volatile solid in mg/L. Environmental engineering of chemical engineering