Emflon® PFRW Filter Cartridges

For Sterile Filtration of Gases

Emflon PFRW cartridges are sterilizing grade hydrophobic membrane filters designed for reliable retention of bacteria and high levels of phages in compressed gas and vent applications.

The filter element features Pall’s advanced 0.2 micron rated polytetrafluoroethylene (PTFE) double-layer membranes, pleated with very high area into single open-end cartridges. They are built to withstand demanding in situ steaming conditions in either the forward or reverse direction.

Even in the presence of high humidity or moisture, often the case in practice, Emflon PFRW cartridges provide sterile effluent and validated performance, ensuring process security. They are the cartridge of choice for critical sterile gas applications.

Features	Benefits
Strongly hydrophobic 100% PTFE membranes	Prevents wetting out in humid conditions, even after repeated use and steaming cycles, allowing for unimpeded gas throughput
High area pleated, robust double-layer membranes	High throughputs and low pressure drops, with sizing resulting in compressor energy cost savings Excellent resistance to mechanical damage
Multi-cycle autoclave and in situ steam challenged in forward and reverse direction	Enhanced steaming resistance
Validated for 0.2 micron bacteria removal in liquid challenge tests, and bacteria and bacteriophage removal in aerosol challenge tests	Provides sterile effluent even in humid conditions, resulting in optimal protection of product, improved fermentation yields, and increased security in aseptic processes Provides superior bacteriophage protection of microbial cultures
Sodium chloride aerosol challenged for particle removal to 0.003 micron	High particle removal efficiency in dry gas
Water Intrusion Testable (WIT)	Enables in situ user integrity testing
100 % integrity tested prior to dispatch	Lot traceable with documented quality

Food Contact Compliance

• Emflon PFRW Filter Cartridges Declaration of Compliance

Materials of Construction

• Filter Medium: Double-layer PTFE
• Support/Drainage: Polypropylene 
• Cage, Core, Fin End and End Cap: Polypropylene
• Adaptor: Polypropylene with internal stainless steel reinforcing ring
• O-ring Seal: Silicone Elastomer

Technical Information

• Nominal Filter Area: 0.8 m2 (8.6 ft2) per 254 mm (10") module

Operating Characteristics in Compatible Gases¹

Maximum Differential Pressure	Operating Temperature
5.3 bard (77 psid) (forward)	<20 °C (68 °F)
4.1 bard (60 psid) (forward)	<80 °C (176 °F)

¹Air, nitrogen, or other compatible gases.

Typical Service Life² Under Continuous Operating Conditions

Continuous gas service	12 months to 60 °C (140 °F)
Vent service	6 months to 80 °C (176 °F)

²For continuous gas flow above 60 °C (140 °F), Emflon CPFR filters are recommended. Emflon PFRW can be operated at higher temperatures for shorter periods.

Typical Flow Rates³

³Typical clean Δp per 254 mm (10") cartridge, air at 20 °C (68 °F). For gases other than air and for multi-round cartridge installations, please contact Pall for proper sizing.

Autoclave and Steaming

Cumulative Steaming Time	Operating Temperature
165 hours (1-hour cycles, forward)	142 °C (287 °F)
20 hours (1-hour cycles, reverse)	125 °C (257 °F)
Maximum Steaming Conditions	Steaming Temperature
1.0 bard (15 psid) (forward)	125 °C (257 °F)
0.3 bard (4.3 psid) (forward	142 °C (287 °F)
0.5 bard (7.3 psid) (reverse)	125 °C (257 °F)

For applications requiring autoclaving and sterlization, Pall recommends the use of Code 7 adaptors to ensure filter sealing after cooling. Cartridges should be cooled to system operating temperature prior to use.

Removal Ratings

Fluid	Performance
Liquids	0.2 μm, sterile effluent4
Gases	0.003 μm particles in dry gas5, aerosol removal of bacteria6, bacteria spores, bacteriophage7

⁴Liquid challenged with Brevundimonas diminuta at >107 cfu/cm2 effective filtration area per modified ASTM 838-05. Provides sterile effluent according to FDA Guidelines (2004).
⁵By NaCl aerosol CNC particle analysis, particle reduction >107. Please contact Pall for details. 
⁶Aerosol challenged with Brevundimonas diminuta in forward and reverse direction, and under long term challenge conditions in forward direction with humidified air (>90 % relative humidity).
⁷Aerosol challenged at high flow rates and high humidity (90 %) with MS-2 and PP7 phage at >107 pfu/cm2 effective filtration area. Provides titer reduction of >1011

Quality

• Cartridges produced in a controlled environment 
• Manufactured according to ISO 9001:2008 certified Quality Management System

This information is a guide to the part number structure and possible options. For availability of specific options and housing details, please contact Pall.

Example Part Number: AB 1 PFR 7 W H4 (See bold references in tables below.)

Element Part Number: AB < Nominal Length from Table 1> PFR < Adaptor from Table 2> W H4

Table 1 - Nominal Length

Code	Length
05	127 mm (5")
1	254 mm (10")
2	508 mm (20")
3	762 mm (30")

Table 2 - Adaptor

Code	Description
2*	SOE – single open end with flat closed end, 2 locking tabs and external 226 O-rings
7	SOE – single open end with fin end, 2 locking tabs and external 226 O-rings
8	SOE – single open end with fin end and external 222 O-rings

* AB05 configurations only.
For availability of additional adaptor configurations, please contact Pall.