10-30-2024, 09:11 PM
Inline Filter
Anyone have opinions about this type of product? Here is an example:
https://www.amazon.com/Bacterial-Viral-F...merReviews
https://www.amazon.com/Bacterial-Viral-F...merReviews
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Inline Filter
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ZacharySimon
Posts: 20 Threads: 5 Joined: Feb 2020
Machine: Philips DreamStation 
Melman
Wiki Editor 
Posts: 2,311 Threads: 51 Joined: Feb 2015
Machine: Resmed Airsense 11Autoset
10-31-2024, 12:36 AM
RE: Inline Filter
I am a microbiologist and have had years of experience with sterilizing filters. this filter is a membrane filter and is probably effective for sterilization. I say probably because the description does not include the filter material or nominal pore size. Sterilizing filters employed in the sterile pharmaceutical industry for filtering air have a nominal pore size of 0.2 microns. A problem with this type of filter for air is that it will become completely blocked if wetted and prevent the passage of air. For that reason I would not recommend the use of the filter downstream of the water chamber.
Also, I don't see any value to the use of such a filter. The air supplied by your machine has the same bacterial content as the air in your home that you breathe during your waking hours. Depending on your pressure settings it is compressed slightly but at most only 1-2%.
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Big Guy
Posts: 2,205 Threads: 114 Joined: Oct 2018
Machine: ResMed AirSense 10 AutoSet
10-31-2024, 10:41 AM
RE: Inline Filter
(10-31-2024, 12:36 AM)Melman Wrote: I am a microbiologist and have had years of experience with sterilizing filters. this filter is a membrane filter and is probably effective for sterilization. I say probably because the description does not include the filter material or nominal pore size. Sterilizing filters employed in the sterile pharmaceutical industry for filtering air have a nominal pore size of 0.2 microns. A problem with this type of filter for air is that it will become completely blocked if wetted and prevent the passage of air. For that reason I would not recommend the use of the filter downstream of the water chamber. Thanks for your reply and explanation. I too, was wondering if such a filter would be worth while? Now I no longer wonder. 
ZacharySimon
Posts: 20 Threads: 5 Joined: Feb 2020
Machine: Philips DreamStation
10-31-2024, 01:37 PM
(This post was last modified: 10-31-2024, 01:38 PM by ZacharySimon.)
RE: Inline Filter
Thanks for your reply. I currently use this, lay it down on its side and within an inch or two of the intake.
https://medifyair.com/collections/air-pu...ucts/ma-15
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