22.020 - Filtration unit for vacuum:

Filtration using vacuum is a chemistry laboratory technique which allows for a greater rate of filtration. Whereas in normal filtration gravity provides the force which draws the liquid through the filter paper, in suction filtration a pressure gradient performs this function. This has the advantage of offering a variable rate depending on the strength of the pump being used to extract air from the acrylic chamber. Care must be taken not to use such a strong vacuum that the filter paper rips (in which case all the solid will be lost back into the solvent) or in extreme cases the glass flask breaks.

The upper and under parts are manufactured from AISI 316 stainless steel and the cylindrical tube is made of acrylic. Support for vacuum.

Filtration unit:
• Contents: 500 ml.
• Support for vacuum
• Ball valve
• Fits for blue and red cap bottles
• Inclusive support screen
• AISI 316 stainless steel.
• Holder for filter paper: POM
• Acrylic tube, OD/ID: 60/52 mm. Length 240 mm.
• Filtration surface: 12,56 cm²
• Filter paper: Ø47 mm
• Total height, excl. glass bottle: 330 mm
• Weight: 0,95 kg
• Standard delivery does not include bottle
• Weight: 0,95 kg

Support screen:

Standard delivery comes with support screen 22.145, (Sartorius No. 6980232). On request we can provide a similar model made of AISI 316 stainless steel.

22.029 - Vacuum pump:
• 230 V/50 Hz, 125 W
• IP 54
• Water separator
• Manometer
• Dimensions: L x W x H: 24 x 21 x 23 cm
• Weight: 5,25 kg

Standard delivery of the filtration system comes without vacuum pump.