Biofil™ Junior

Polyethersulphone membrane cartridge filters for small-scale applications.

Materials of Manufacture

Filter membrane: Polyethersulphone
Membrane support: Polypropylene
Irrigation mesh (support): Polypropylene
Drainage layer: Polypropylene
Inner core: Polypropylene
Outer support: Polypropylene
End fittings: Polypropylene
Support ring: Stainless steel

Cartridge Dimensions (Nominal)

Diameter: 70mm (2.8")
Length: 77.5mm (2.5”)
136mm (5”)

Gaskets and O-Rings

J-style: Silicone (other materials are available on request).
S-style: Not supplied.

Maximum Differential Pressure

Normal flow direction at:
20°C (68°F): 6.0bar (87psi)
80°C (176°F): 4.0bar (58psi)
100°C (212°F): 3.0bar (43psi)
120°C (248°F): 2.0bar (29psi)

Operating Temperature

Maximum continuous: 60°C (140°F)

Effective Filtration Area

Absolute Microbial Rating Effective Filtration Area (for each 5" cartridge)
0.04, 0.1, 0.2, 0.45, 0.65 and 1.2μm 0.19m2 (2.05ft2)


  • Small-scale biopharmaceuticals
  • Electronics and semiconductors
  • Pilot-scale studies
  • Opthalmic solutions
  • Small-scale fine chemicals
  • Point-of-use water supply

Clean Water Flow Rates


RR Retention Rating
MT Maximum temperature recommended of a working product in degrees centigrade
MoC Primary material of construction
MoC Primary material of construction
MP Maximum working pressure of housing in bar
Brand Manufacturing brand name supplying the product
FE Filter efficiency
Q Quality assurances and certificates validating this product