Disposable Disc Filter, 0.02-0.45 µm (CAT#: STEM-BC-2921-ZJF)

This compact disc filter is designed for small-volume liquid filtration and sterile-gas applications. It uses a polypropylene housing and support layer around a microporous PTFE membrane. High-frequency ultrasonic welding seals the filter without conventional adhesive bonding. Liquid versions are available for fine filtration at 0.22 or 0.45 µm. The gas version provides a stated filtration rating of 0.02 µm. The disposable construction simplifies installation and eliminates routine housing cleaning. High flow and throughput support use with small bioreactors and laboratory filtration assemblies. The unit can be sterilized by ethylene oxide or repeated steam autoclaving. Integrity and differential-pressure specifications support verification before critical service.

Housing material: Polypropylene
Support material: Polypropylene
Membrane material: Microporous PTFE
Sealing method: High-frequency ultrasonic welding
Liquid filtration ratings: 0.22 and 0.45 µm
Gas filtration rating: 0.02 µm
Steam sterilization: 121°C for 30 min, up to 3 cycles
Alternative sterilization: Ethylene oxide fumigation inside a breathing bag
Minimum bubble point for 0.22 µm membrane: ≥900 mbar using 60% isopropanol
Maximum forward differential pressure for liquid: 3.5 bar at 23°C
Maximum forward differential pressure for gas: 3.0 bar at 23°C
Construction: Disposable disc filter

Compact disposable design
PTFE chemical compatibility
Liquid and sterile-gas versions
Ultrasonic adhesive-free sealing
High flow and throughput
Three steam-sterilization cycles
Defined integrity-test value
Suitable for small bioreactors

STEM-BC-0039-ZJF
STEM-BC-0040-ZJF
STEM-BC-0065-ZJF
STEM-BC-0066-ZJF
STEM-BC-0067-ZJF