Diffusion Stone - .5 Micron Carbonation/Oxygenation Stone

Diffusion Stone - .5 Micron Carbonation/Oxygenation Stone

In Stock
60 day no hassle return policy. Details

Our .5 micron carb stone is ideal to force carbonate your kegged beer, or as an aeration stone prior to fermentation. The barb is 1/4" OD.

To Use: Attach 2 feet of 1/4" tubing from the "gas in" dip tube inside the keg. (Tubing not included). You set your desired pressure on the regulator and gas gets emitted through the .5 micron stainless stone. The bubbles rise through the beer creating so much surface area contact between gas and liquid that the absorption rate is very rapid. This is very similiar to how beer is carbonated in breweries.

316 Stainless
1/2" diameter. Stone is 1" in length. Overall length is 1 7/8"

Sanitizing your Diffusion Stone:

To properly sanitize your stones, we recommend you run it in a sanitized solution for 5 minutes. If the stone becomes clogged we recommend boiling the stone for 1-3 minutes to help break down anything within it.

If boiling is not an option, we recommend soaking in Star San. Star San will remove a majority of surface contamination/bacteria, but will not sanitize the interior of the stone which may or may not be contaminated.

Please note that you do not want to touch the stainless stone portion with your hands. The oils on your fingers can actually clog the small pores in the stone.

Item # KEG594
Shipping Eligible for Free Shipping Program
Availability California - In Stock
Pennsylvania - In Stock
Weight 0.19 LBS
Community Q&A

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Why did you choose this?
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i need it
Eric W on Sep 8, 2020
Classy looks
troy s on Mar 17, 2020
i need it
Eric W on Sep 8, 2020
To improve carbonation in my kegs
Ariel Zelaya on Apr 24, 2020
Classy looks
troy s on Mar 17, 2020
to better carbonate my beer.
Gary J O on Jan 21, 2020
Trying lees oxygenation for H2S reduction
Michael Z on Jan 22, 2019
i need one
John N on Oct 4, 2018
To oxygenate wort
Audie S on Jun 26, 2018
want to carbonate the right way
Brian R on Mar 16, 2018
in case of use to carb beer
David B on Feb 6, 2018
Degassing lab samples at a commercial winery
Emily T on Jan 16, 2018
To improve carbonation in my kegs
Ariel Zelaya on Apr 24, 2020
to better carbonate my beer.
Gary J O on Jan 21, 2020

4.0 / 5.0
10 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Good product
Good not great, the good part is that it works as advertised, the not so good is that this diffuser stone is priced higher than average. As with any diffuser stone it is IMPERATIVE that you keep it clean before and after use or it WILL CLOG and not work any longer
April 7, 2018
over 2 years ago
Does the job
Perfect for hooking up to a tank. Great price!
May 26, 2015
Good performance
Great stone to oxygenate your wort when pitching, nice small bubbles. The barb eventually separated but I epoxied it back; used for 10 years and still performing.
May 8, 2015
works great
I've used this on numerous batches and never had a problem with it. Good product.
May 6, 2015
Fast oxygenation of wort
I have been using one of these for the last 8 years to oxygenate wort at pitching time. The 0.5 micron will filter the oxygen and produce fine bubbles giving more surface area for diffusion. A must have if you use pure oxygen.
May 5, 2014
Works great
Just keep it clean and boil to sanitize.
May 29, 2013
useful device
This is an excellent product at an affordable price.
May 29, 2013
Breaks easily
Ordered one and after a few uses, the barb separated from the stone. Second one now seems clogged.
May 14, 2013
better than shaking a keg
Works as intended. Carbonated keg well with higher pressure and short carbonation time. Did have to shake the keg a few times and let sit to get desired results. It did not do well with use with counter pressure bottle filler from keg.
May 4, 2013
easy to use
used for carbonation in kegs. works quite well. wasnt a huge fan of cranking up the PSI, shaking, and waiting. usually ended up over carbed. this requires a little more patience, but the results were much more reliable. simply boil to clean and try not to touch with your bare hands.
May 1, 2013