TEST #12 Venting and Gas Filtration Vent Filter Selection Guide

选择气体或排气过滤器时最重要的考虑因素是空气流速和颗粒或微生物截留率。过滤器中的膜材料必须提供足够的表面积或开放空间,以容纳系统所要求的空气流。The filter should also efficiently retain particles and aerosol droplets, and, if sterile air or gas is required, retain bacteria. 


Typical Air Flow Rate
Pore Size/EFA
采用 PTFE 膜的 Acro37 TF 排气装置
Small-volume venting and degassing 3.58 L/min at 0.2 bar (20 kPa, 3 psi) 0.2 µm/
7.5 cm2
Bacterial Air Vents with Glass Laminate
For venting and air/gas delivery.Exhibits higher temperature and pressure ratings, and higher air flow rates. 40 L/min at 0.4 bar (40 kPa, 5.5 psi) 1 µm (nominal)/
7.5 cm2
 Emflon II 膜的 Acro 50 通气滤器
Ideal for use in air/gas and vent applications with proprietary, low pressure drop hydrophobic PVDF membrane. 27 L/min at 1 bar (100 kPa, 15 psi) 0.2 µm/
20 cm2

Acro 50 通气滤器
Venting bioreactors, fermentation tanks, and carboys; sterile gas purging of culture vessels. L/min at 0.2 bar (20 kPa, 3 psi):0.2 µm:8 0.45 µm:12 1 µm:15 0.2, 0.45, 1 µm/19.6 cm2
PTFE 膜的 AcroPak 300 囊式过滤器
Bioreactor venting requiring high air flow rates.The industry standard for venting bioreactors and fermentors. 32 L/min at 0.07 bar (7 kPa, 1 psi) 0.2 µm/300 cm2
Provides bacteria-free air for sterile applications.   1.2 µm (liquid filtration); 99.97% retention of 0.3 um DOP aerosol (following ASTM D 2986-95A)/860 cm2
Vacushield® Vent Device
Use between a pump and receiving vessel to protect valves and pump components from damage from aqueous solutions; also protects lab personnel from aerosolized contaminants. 8 L/min at 0.1 bar (10 kPa, 2 psi) 0.45 µm/19.6 cm2