PTFE Capsule Filters
The hydrophobic PTFE sterilization grade 0.2um filter capsule is a highly retained hydrophobic membrane designed for the sterilization of critical liquids and gases. Hydrophobic PTFE filter media can provide extremely high air flow rates at low pressure differentials. Natural hydrophobic membranes can also provide a high degree of filter integrity and long life during high temperature exhaust applications and repeated steaming. The PTFE membrane with a specially designed high-temperature structure provides excellent chemical compatibility and excellent flow per unit area for in-situ steam and hot gas applications.
Integrity test hydrophobic filter
The hydrophobic membrane can be used as an air filter, usually as a ventilation filter. These protect the contents of tanks or other containers from contamination by air entering or leaving them as a result of adding or removing their stored liquid. The concern is that water may stay in the membrane due to splashing, bubbling, or even condensation of water vapor. Liquid water may hinder the passage of air and may cause the water tank to collapse when the water is discharged; in addition, water promotes the growth of microorganisms. There is a strong need to avoid the resulting pollution.
The prescription for this situation is to deny the presence of moisture. This can be done for hydrophilic filters that use electric heating or steam jacketed filter housings. The temperature rises above the dew point of the ambient air. Usually, steam at a pressure of 1/3 bar (5 psi) is sufficient. Unfortunately, long-term air passing through this heating device can cause oxidative degradation of certain filter element components (such as polypropylene), and may also oxidatively degrade the microporous membrane itself, depending on its composition.
Fluorinated polymers are relatively difficult to oxidize; polytetrafluoroethylene is extremely so, polyvinylidene fluoride is slightly inferior. This is why these polymers are so widely used in air filtration environments. The greater hydrophobicity of PTFE provides significant advantages.
Sterilization grade ventilation filter for tank ventilation and product.
Compressed air filtration (sterile air)
Sterilization filtration of fermentation intake and exhaust
Bioreactor inlet and outlet gas filtration
Sterile air filtration on blow molding, filling and sealing machines
Sterile ventilation of containers and large bottles
Autoclave vacuum destruction line
Aseptic ventilation of the lyophilizer
Sterile process gas filtration
Disinfect alcohol flow
Features and advantages
High void volume
High airflow at low pressure drop
Long steam cycle life and long service life
The highest hydrophobicity of the membrane
Complete integrity test can be performed through water intrusion, bubble point or diffusion flow test to ensure integrity and reliability.
Passed bacterial retention test (B. Diminuta) and aerosol phage challenge verification
The capsule filter is available in two forms, gamma compatible and sterile, and does not require cleaning and cleaning verification steps related to the stainless steel housing, thereby maximizing ease of use.
|Membrane||Double layer hydrophilic PTFE|
|Support and Drainage Layers||Polypropylene, oxidation resistant|
|Core, Cage, End Caps||Polypropylene, oxidation resistant|
|Adapters||Polymeric, encapsulated in oxygen-resistant polypropylene|
|Sealing Technology||Thermal Bonding without any Adhesives|
|O-Rings||Sillicone,EPDM, Viton, Fluroelastomer, Buna M, Teflon Encapsulated Viton|
|Effective Filtration Area||7 ft² (0.65m²) per 10'' cartridge element|
|Available Micron Rating||0.1um, 0.2um (0.01um in a gas), 0.45um,0.65um,1.0um, 3.0um,5um and 0.01um|
|Lengths||5'' (13cm) , 10'' (25cm), 20''(50cm), 30'' (76cm)|
|Maximum Differential Pressure (Forward Direction)||5 bar (80 psi) @ 25°C (77 °F), 1.8 bar (24.6 psi) @ 80 °C (176 °F)|
|Maximum Differential Pressure (Reverse Direction)||2 bar (65psi) @ 25 °C (77 °F)|
Effective filtration area
|SIZES (INCH)||Filtration Area|
|If you want to know more detailed information about our equipment, please contact us.|