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Laboratory accessories  > Filtration, water recycling  > Glass and quartz fibre filters  > Glass fibre filter paper-Round filters
Stikla šķiedras filtri
Glass fibre filter paper-Round filters

Made of 100 % borosilicate glass fibre and inorganic bonding agents.
Properties:
  • Chemically resistant to the majority of organic and inorganic solvents, aggressive chemicals and highly concentrated bases
  • Not resistant to hydrofluoric acid
  • Constant weight, no significant influence on fluctuations in ambient humidity
  • Mechanically stable, limited bending resistance
  • Temperature stable up to 500 °C
Filter units and clamping fixtures must have flexible sealing surfaces.
 
Type GF 6
  • Filtration speed acc. to Herzberg: 200s
  • Air resistance at 1 m/s mm on the water column: 1500
  • Retention rate: 99.97 %
  • Retention range: <1 micron
  • Surface weight: 80 g/m2
Applications: environmental analysis, biology, physics, drinks industry
Use: Gas/air monitoring, water and waste water investigations

  Article Ø (mm)   Type   Thickness (µm)   Pack Qty.     
 AY36.1 25   GF 6   350   200     
 AY39.1 47   GF 6   350   200     
 AY40.1 50   GF 6   350   200     
 AY41.1 55   GF 6   350   100     
 AY42.1 70   GF 6   350   100      
 AY43.1 90   GF 6   350   100      
 AY44.1 100   GF 6   350   100      
 AY45.1 110   GF 6   350   100     
 AY46.1 125   GF 6   350   100      
 AY47.1 150   GF 6   350   100     
 AY48.1 185   GF 6   350   100     
 Y716.1 200   GF 6   350   100     
 AY49.1 240   GF 6   350   100  

Type GF 8
  • Filtration speed acc. to Herzberg: 80s
  • Air resistance at 1 m/s mm on the water column: 700
  • Retention rate: 99 %
  • Retention range: 3 μm
  • Surface weight: 75 g/m2
Applications: environmental analysis, industry
Use: Determining PCB, DDE, DDT, furane and dioxin levels in the air
  Article Ø (mm)   Type   Thickness (µm)   Pack Qty.   Price  
 AY51.1 90   GF 8   350   100  
Type GF 92
  • Filtration speed acc. to Herzberg: 120s
  • Surface weight: 70 g/m2
  • Retention range: 2- 3 μm
Applications: environmental analysis, biology, drinks industry
Use: Diaphragm- type upstream filters, soot extraction from gas analysers
  Article Ø (mm)   Type   Thickness (µm)   Pack Qty.     
 EA41.1 40   GF 92   350   200     
 AY55.1 47   GF 92   350   200      
 AY56.1 50   GF 92   350   200      
 AY57.1 100   GF 92   350   100     
 AY58.1 135   GF 92   350   100     
 AY59.1 142   GF 92   350   100  

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