Emflon® PFAW Filter Cartridges

For Bioburden Reduction in Dry Gases

Emflon PFAW cartridges are high capacity hydrophobic membrane filters designed for reliable reduction of particles and microorganisms in compressed gas and vent applications.

The filter element features Pall’s proprietary 0.2 micron polytetrafluoroethylene (PTFE) membrane, pleated to give high area in single open-end cartridges.

Emflon PFA cartridges offer exceptionally high flow rates to ensure low installation, operating, and compressor energy costs. They provide an economical solution for large-scale fermenter air, general purpose venting, instrument air, and general duty air and gas service lines.

Features	Benefits
Strongly hydrophobic 100 % PTFE membranes	Prevents wetting out in humid conditions, even after repeated use and steaming cycles, allowing excellent gas throughput
High area pleated, robust membrane construction	Enables extremely economical installations and compressor energy savings due to high flow rates and low pressure drops
Multi-cycle autoclave and in situ steam challenged	Enhanced steaming resistance
Validated for bacteria removal in air with aerosol challenge	Provides reliable and economical bioburden reduction in dry gas, protection of microbial cultures, protection of tank contents, and improved fermentation yields
Integrity testable by forward flow or pressure hold test	Ensures process security
100% integrity tested prior to dispatch	Lot traceable with documented quality

Food Contact Compliance

• Emflon PFAW Filter Cartridges Declaration of Compliance

Materials of Construction

Filter Medium	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

Nominal Filter Area

• 0.8 m² (8.6 ft²) per 254 mm (10 in.) module

Typical Service Life¹ Under Continuous Operating Conditions

• Continuous Gas² Service: 12 months to 60 °C (140 °F)
• Vent Service: 6 months to 80 °C (176 °F)

Typical Flow Rates³

Steaming

Cumulative Steaming Time	Operating Temperature
40 hours (1-hour cycles, forward)	140 °C (284 °F)
100 hours (1-hour cycles, forward)	125 °C (257 °F)
Maximum Steaming Conditions	Steaming Temperature
0.3 bard (4.3 psid) (forward)	140 °C (284 °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
Gases	0.3 micron particles in dry gas4, aerosol removal of bacteria5

¹Emflon PFAW can be operated at higher temperatures for shorter periods. Please contact Pall for application details.
²Air, nitrogen, or other compatible gases
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.
⁴By NaCl aerosol CNC particle analysis, average removal efficiency > 99.9%. Please contact Pall for details.
⁵ Passing an appropriate integrity test, provides sterile effluent when aerosol challenged with Brevundimonas diminuta at >107 cfu/254 mm (10") cartridge

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 PFA 7 W H4 (See bold references in tables below.)

Element Part Number: AB <Nominal Length Code from Table 1> PFA<Liquid Removal Rating Code from Table 2> W H4

Table 1 - Nominal Length

Code	Description
05	127 mm (5 in.)
1	254 mm (10 in.)
2	508 mm (20 in.)
3	762 mm (30 in.)

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	50

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