Membrane PTFE Filter Cartridges

Membrane PTFE Filter Cartridges
Product Details

LPTA filter cartridges are featured by permanently hydrophobic PTFE membrane, specially designed for sterile venting and gas application in vaccine manufacturing. They are integrity testable, offering the highest process security, high throughputs, extreme humidity and stringent in-line steam sterilizations. These filters can be steam-sterilizable repeatedly for long service life.

Features and Benefits

  • High flow rates and low pressure drop

  • High strength, long service life and cost-effective 

  • 100% integrity testable prior to release


  • Cartridges produced in a controlled environment

  • Manufactured according to ISO9001 certified Quality Management System


LPTA Filter Cartridge for Air/Gas in Vaccine Filtration

Materials of Construction


Double-layer     Polytetrafluoroethylene (PTFE)



Core, Cage and Drainage


End  Caps

PP  (222/226 with encapsulated stainless steel reinforcing ring)



Sealing     Technology

Thermal Bonding, No Adhesives





5   inch, 10 inch, 20 inch, 30 inch, 40 inch

Filtration Area, ft2

≥ 5.8   per 10-inch  element

Pore Size, μm

0.01 (for gas)

Maximum Differential Pressure

Forward:  4.2 bar @ 23 ℃; 1.5   bar @ 85 ℃

Integrity Test- at 23 ℃

Bubble point

≥ 1100   mbar with 60/40% IPA/water

HydroCorr   (water intrusion   test)

≤ 0.75mL/min per 10-inch cartridge with water at 2620mbar

Bacterial Retention

Passed   the bacterial   challenge testing using Brevundimonas diminuta(ATCC19146)   at a minimum challenge concentration of 1 x 107 CFU/cm2.

Extractables, per 10-inch cartridge

≤ 10  mg after 24-h soak in   water

Non-Fiber Releasing

Meets   the criteria for   a “non-fiber releasing” filter as defined in 21 CFR   210.3 (b) (6).


Component  materials   meet GB/T 14233.2<2005>of Chinese National Standard   for Safety Tests.


<  500 ppb after a water flush of 60 liters per 10-inch cartridge

Multiple Sterilization Cycles

200   steam-in-place sterilization or autoclave cycles of 30 min at 123℃

Bacterial Endotoxins

< 0.25 EU/ml as determined by the LAL test

Engaged in creating a clean and fresh environment for people, Sffiltech is specialized in membrane ptfe filter cartridges. As one of the best manufacturers and suppliers, we can assure you the best quality and stable performance of our custom products. Please rest assured to buy.