Apparatus :
* Furnace
* Whatman Filter paper No – 42
* Silica Crucible
* Funnel
Procedure :
* Take 20 ml of aerated sample and filter it through Previously weighed whatman paper No – 42
* Wait for complete filtration by giving 2-3 washings with distilled water.
* After complete filtration keep the paper in oven at 1000C for 30 min. to 1 Hr.
* Take the weight of filter paper along with residue after complete drying.
Calculations: MLSS in ppm = (B – A) x 106 / ml of Sample Taken
Where
A = Weight of pre-dried filter paper
B = Weight of filter paper & Residue
View Comments (3)
Sir, how to develop the MLSS?
Dear Sir,
In calculation of MLSS in ppm,why figure 106 is taken.
It is not 106. It is 10 raise to power 6