Oxygenation of wort

Just curious as to why you'd even bother? A little vigorous stirring/splashing as you transfer the wort to the fermenter and pitch the yeast has always worked fine for me. Ah well... it's all good.

Many people use the Bernzomatic or similar O2 canisters. Kits are sold with the fittings at my LHBS and online. No problems with that O2 as opposed to medical grade. Shaking or a spinning whip will do as well.

For the last couple of years I've been using medical grade O2 for my medium to large beers in addition to starters with great results. Since I don't have a medical condition or prescription requesting medical O2, I'll most likely change over to Welding O2 when I run out. Over the last couple of years I've been hearing that welding O2 is cleaner than medical anyways.

Wild

The oxygen for welding is the best there is for a homebrewer.

1. Has less impurities, impurities would lead to accidents in welding.
2. Has no fungicides, many medical grade oxygens has fungicides to prevent some staff infections in the lungs.
3. Cheaper, if this is not the most important driving factor of using canisters then I know of none other.

I personally only use oxygen if I am brewing a big stout or very strong IPA, other than that shaking is fine. If you still have worries then use an in line HEPA filter (the same people use for aquarium pumps).

Of all the things that could be in a batch of homebrewed beer, this is the least dangerous.

Cheers

You might give a thought to aviation oxygen. A lot cheaper than medical O2, but pretty clean. Available from FBOs at large general aviation airports.

eelloin