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CHROMAFIL® Combi Filters  
  syringe filters with integrated glass fiber prefilter  
     
  Properties  

  Combi syringe filters with a coarse glass fiber prefilter and a small-pore membrane as main filter  
User benefits:
for solutions with a high load of particulate matter: lower back pressure, easy filtration
for high yields of filtrate: more mL of pure filtrate per filter
The technology:
The glass fiber membrane (1.0 µm) removes coarse particles, before they can block the fine main membrane. This results in a better filtration efficiency, especially for highly contaminated samples
  Housing: solvent-resistant, ultra low bleed polypropylene
  Entry: Luer lock
  Exit: Luer
  Pore diameter: 1.0 / 0.20 µm or 1.0 / 0.45 µm
  Filter diameter: 25 mm
  Void volume: < 80 µL
  Packing unit: 100 filters / BigBox with 400 filters

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  CHROMAFIL® GF/PET  
  Polyester syringe filters with glass fiber prefilters  
  Properties  

 
GF/PET
 Hydrophilic multipurpose membrane
For polar and nonpolar solutions
the HPLC filter, especially suited for eluent mixtures of water and organic solvents
Recommended for solutions with a high load of particulate matter or for highly viscous solutions
  For chemical compatibility click here.

  Ordering information
  color-coded polyester/glass fiber combi filters

  Type Pore size Membrane Color code Filters per REF
    [µm] dia. [mm] top bottom pack
  GF/PET-20/25 1.0/0.20 25 blue orange 100 729032
            400 729032.400
  GF/PET-45/25 1.0/0.45 25 black orange 100 729033
            400 729033.400

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  CHROMAFIL® GF/RC  
  Regenerated cellulose syringe filters with glass fiber prefilters  
  Properties  

 
GF/RC
 Hydrophilic membrane
For aqueous and organic/aqueous liquids, i.e. for polar and medium polar solutions
Recommended for solutions with a high load of particulate matter or for highly viscous aqueous solutions
  For chemical compatibility click here.

  Ordering information
  color-coded regenerated cellulose/glass fiber combi filters

  Type Pore size Membrane Color code Filters per REF
    [µm] dia. [mm] top bottom pack
  GF/RC-20/25 1.0/0.20 25 blue blue 100 729050
            400 729050.400
  GF/RC-45/25 1.0/0.45 25 black blue 100 729051
            400 729051.400

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  CHROMAFIL® GF/PVDF  
  Polyvinylidene difluoride syringe filters with glass fiber prefilters  
  Properties  

 
GF/PVDF
 Hydrophilic membrane
Recommended for filtration of biological samples with high particle loads – This filter features a high binding capacity for proteins.
Also suited for filtration of polar and nonpolar solutions
  For chemical compatibility click here.

  Ordering information
  color-coded polyvinylidene difluoride / glass fiber combi filters

  Type Pore size Membrane Color code Filters per REF
    [µm] dia. [mm] top bottom pack
  GF/P-45/25 1.0/0.45 25 black white 100 729039
            400 729039.400
               

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