Item #: Q45
Our Price: $12.99
In Stock, Will Ship On 06/22/2018.
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This large (50mm diameter) HEPA air filter has a glass micro fiber filter element, and is rated at 120 hours of use before clogging. Rated to be 99.97% efficient at blocking particles .2 micron in size or larger. What this means is the air going through it will be essentially sterile when it comes out.

The glass micro fiber element will last for several hundred uses with proper care. Designed by us to perfectly fit standard aquarium air pump tubing. Autoclavable.

This filter will also fit any of our bored rubber stoppers (the stem is stepped to fit anything from fish tank tubing to 3/8" interior diameter tubing) to be used in place of an airlock. Other uses include filtering incoming air when hand pumping beer. See also our Foam Stoppers (link below) for a good airlock alternative.


Average Rating:
(based on 1 review)

Showing 1 Review:

Review and Rate this Item
by Terry
on 1/17/2018
from Vancouver, WA
Best Air Filter
This was the best air filter for the money, and allowed different size tubing to be used. After fermentation subsides, I replace the blow-off with this filter, then I can take samples or drain to my corny keg, without worrying about contaminated air from entering.
Review and Rate this Item
4/19/2018 1:02:40 PM
Would this fit in the airlock hole of a drilled #10 stopper?
11/20/2017 6:19:51 PM
Can this get wet? Just wondering how to sanitize the side clean air comes out. Also, what kind of volume/pressure can it withstand?
We do not recommend getting this wet.  You can wipe the outside of the filter with a sanitizer but you cannot really do anything to the inside except autoclave it.  The air blown through will be sanitary.   % psi is about the max pressure you can put through this.
Barry Cooper
4/29/2017 1:03:47 PM
Is it important which direction gases pass through this filter? In other words, if I am installing it in a gas line, should I orient it in a particular direction?
No, this filter does not have a preferred direction.
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