Fluorofil™ Junior

ePTFE Membrane Cartridge Filters for Small-Scale Applications

Fluorofil™ Junior cartridges are manufactured using a highly hydrophobic ePTFE membrane and are designed for retrofitting into existing Junior-style housings. The enhanced ePTFE membrane offers exceptionally high gas flow pressure differentials (see graph).

Features and Benefits

  • Guaranteed microbial ratings in a liquid challenge
    Fluorofil™ cartridges are validated for bacterial removal in liquids in accordance with PDA, HIMA guidelines and ASTM F838-05, with a log reduction value >7. This test is stringent in comparison to an airborne particulate challenge test.

Materials of Manufacture

Filter membrane: ePTFE
Membrane support: Polypropylene
Irrigation mesh (support): Polypropylene
Drainage layer: Polypropylene
Internal adaptor support ring: Stainless Steel
Inner core: Polypropylene
Outer support: Polypropylene
End fittings: Polypropylene
Sealing: Fusion bonding

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): 6.0 bar (87lb/in2)
80°C (176°F): 4.0bar (58lb/in2)
100°C (212°F): 3.0 bar (43lb/in2)
120°C (248°F): 2.0 bar (29lb/in2)
125°C (257°F): 1.5bar (22lb/in2)

Operating Temperature

Maximum continuous: 80°C (176°F).


Autoclave 70 x 25 minute cycles at 135°C (275°F).

Effective Filtration Area

Absolute Microbial Rating Effective Filtration Area (for 5" cartridge)
0.2μm 0.19m2 (2.05ft2)


Fluorofil™ Junior ePTFE membrane cartridges meet the demanding filtration requirements of pharmaceutical, semiconductor and fine chemical manufacturers. They are suitable for a wide range of small-scale sterile venting and gas filtration applications, including the filtration of wet gases. They can also be used for the small-scale fine filtration of aggressive chemical solutions including acids, alkalis, solvents and etchants.

  • Sterile vents
    The safe sterile venting of processing vessels in pharmaceutical, fermentation, and food and beverage processes.
  • Small-scale sterile process gases
    The supply of sterile gas for critical applications in the pharmaceutical, biotechnology, food and beverage markets.
  • Small-scale fine chemicals and solvents
    The removal of submicronic particles from processing chemicals and solvents.
  • Small-scale photoresists and developers
    The microfiltration of photoresists and developer solvents, susceptible to contamination and precipitation during manufacture, storage and processing.

Flow Characteristics

Gas Flow Rates

Photo Photo

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