Syringe filtersSyringe filtersSyringe filters (combi), CHROMAFIL Xtra GF / PTFE, 25 mm, 1 µm / 0.45 µm


Combi syringe filters are recommended for solutions with a high load of particulate matter or for highly viscous solutions. These products combine a coarse glass fiber prefilter and a small-pore polytetrafluoroethylene membrane as main filter. The hydrophobic PTFE membrane is very resistant towards all kinds of solvents as well as acids and bases. Flushing with alcohol, followed by water, makes the originally hydrophobic membrane more hydrophilic. Labeled for method validation and certification. All CHROMAFIL filters are autoclavable (121 °C and 1.1 bar for 30 min)!


Package unit 100 Piece(s)

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Hazardous material No
Method Filtration
Type Syringe filter (combi)
Housing type Wheel-like shaped housing
Hardware Polypropylene (PP) housing with filter membranes
Membrane type Combi – Glass fiber (GF) / Polytetrafluoroethylene (PTFE)
Membrane properties Hydrophilic – hydrophobic
Membrane diameter 25 mm
Membrane pore size 1 µm / 0.45 µm
Code type Labeled
Color code (top) Labeled
Color code (bottom) Colorless
Inlet Luer lock (top)
Outlet Luer tip (bottom)
Sample volume 5-100 mL
Recommended application(s) For solutions with high loads of particulate matter or for highly viscous solutions (e.g., soil samples, fermentation broths), Inert filter, Very resistant towards all kinds of solvents as well as acids and bases
Sterile No
Binding capacity (proteins) Moderate–high
Dead volume 80 µL
Filtration area 4.91 cm²
Storage temperature RT

Additional information

Packing units

100 pieces, 400 pieces