CEMS Water-Blocking Filter Membrane Filter

The German Sartorius Midisart 2000 filter uses hydrophobic PTFE membrane as the air filtration medium, which can be autoclaved for repeated use. It is suitable for sterile ventilation in small fermenters and culture medium storage tanks, as well as for filtering air at the inlet of analytical instruments. The unique design of the Midisart 2000 gives it high flow capacity and safety. The membrane is reinforced with polypropylene mesh, withstands pressures up to 3 bar, and with a filtration area of 20 cm², it achieves high flow rates even at low pressure differentials.

To prevent damage to the analyzer caused by defects in sample pretreatment equipment (such as dehumidifiers, peristaltic pumps, and filters), the liquid blocker is directly installed on the inlet pipe of the gas analyzer. The coated semi-permeable membrane inside the liquid blocker separates the sample gas from polymers and dust to protect the analyzer. If the membrane becomes completely covered by polymers and dust, interrupting the airflow, an alarm system installed on the flow meter triggers an alert. Particles dislodged during the replacement of the dust filter cartridge may eventually harm the analyzer.
The membrane pore size of the liquid blocker is 0.1 micrometers, preventing these particles from contaminating the analyzer.

Technical Data:
Water Pressure (Max): 0.2 MPa
Air Pressure (Max): 0.2 MPa
Gas Flow Rate (Max): 400 L/h
Pressure Loss (@100 L Air/h): Approx. 1 kPa
Pressure Loss (@400 L Air/h): Approx. 4 kPa
Membrane Pore Size: <0.1 µm
Operating Temperature Range (Max): 0°C - 90°C
Effective Filter Area: Approx. 20 cm²
Filter Volume: 5 mL
Materials: PTFE, Polypropylene (PP), Special Coating
Dimensions: Diameter Approx. 7 cm, Length Approx. 12 cm
Installation: Installed on the air source pipe at the inlet side

Gas Connections: 1/8" NPT External Thread, or 6 mm Straight Tube, or 6-12 mm Barbed Fitting

Applications:
Emission Monitoring of Fossil Fuels
Waste Incineration Plants
Heat Treatment
Cement, Glass, Metallurgical, and Paper Industries