This SOP is for Vacuum filtration Using vacuum/Büchner flasks. The vacuum can be drawn by an electric vacuum pump or by a water tap attachment.
There are different types of funnel available. The single piece (Büchner) funnel and the 2/3 piece clamped funnel. The clamped funnel creates a seal over the edges of the filter so that it is not able to lift and material cannot be washed under the filter.
This SOP is for water only, acids, volatile fluids or those evolving corrosive gases require further risk assessment.