Moisture blocks 0.22 micron filter for steril aeration

Hardware, PWM, and Optics
1

Hi all,
Have any users encountered the following situation: 0.22 micron filter is used to sterilize air pumpped into Pioreactor and over ti,me, say overnight, the bubbling stops because moisture blocks the filter.

Any suggestions?

Xiao

2

Problem is solved by changing the filter to hydrophobic PTFE filter, which is autoclavable.

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