FERRODAY 0.5 Micron Diffusion Stainless Steel Aeration Stone with 1/4" Barb for Homebrew Wine Beer Soda + 20 Inch Silicone Hose

I was concerned that it would slip off the gas inlet fitting on my ball lock corny keg. It seems to be sufficiently secure.

These produce a very fine mist of bubbles and seem to withstand nitric and NO2 gasses with a dozen uses an no obvious corrison. They are outstanding for ad-hoc nitrogen oxide gas absorbers. The main downside is the pressure required to achive throughput, several PSI, at the hairy edge of typical glassware.

Small but works well.I attached this to a silicone tube and 1.5” TC ball lock connected to the lid of my conical SS fermentation vessel. Easy way to force carb.

High quality at a fair price. Nice even flow, just following initial use instructions.

Using for making vinegar these have held up through 3 three gallon batches of vinegar and show no signs of deterioration or clogging.

As with some others, mine was defective with all the bubbles coming out of 3 or 4 areas… all VERY large bubbles; almost like right out of the tube. ***EDIT*** I got a replacement, and it was much better… not as good as I’d like, but a solid 3.5 star, rather than the 1 star originally given.

I did not expect to be able to get over 2liters/minute output but got this and more. I've been getting up to roughly 10PSI with no issues and the bubbles are clearly small and my gas quality (using it as a filter) is improved. Thanks Ferroday people! It easily satures 2 Liters of liquid in gas with roughly 5-10PSI in seconds. The pictures attached are time-lapsed over 10 seconds.

Carbonates my brews much faster than force carbing.