Small tank of oxygen for aeration?

[Normski]

You got it right first time..

.... bollocks to that!

[richard080561]

Interesting, well perhaps it’s something worth considering after all. Thanks allot

You will need a regulator (£36 https://www.welduk.com/product/regulato ... -cylinder/), an aeration stone (£8 for a basic stone, £17 for a wand) and some tubing at a minimum. Realistically you also want a flow meter (£10.26 https://www.ebay.co.uk/itm/265130660620), or you will run through your oxygen very quickly and need to spent another £25 before long.

You don't need to pay that much for a regulator. You don't need a gauge on it. I know this one doesn't say it is for O2 but it is simliar to the one I have https://weldingsuperstore.co.uk/oxyturb ... 25000.html

You forgot to mention that he will also need a JG fitting to attach the tubomg to the regulator.

[Jocky]

Interesting, well perhaps it’s something worth considering after all. Thanks allot

You will need a regulator (£36 https://www.welduk.com/product/regulato ... -cylinder/), an aeration stone (£8 for a basic stone, £17 for a wand) and some tubing at a minimum. Realistically you also want a flow meter (£10.26 https://www.ebay.co.uk/itm/265130660620), or you will run through your oxygen very quickly and need to spent another £25 before long.

You don't need to pay that much for a regulator. You don't need a gauge on it. I know this one doesn't say it is for O2 but it is simliar to the one I have https://weldingsuperstore.co.uk/oxyturb ... 25000.html

You forgot to mention that he will also need a JG fitting to attach the tubomg to the regulator.

I started with the regulator without the gauge - and the problem with it was that the output barb on it doesn't fit any tubing I have, and there wasn't a good JG fitting to replace it with. I started off by cutting down a MFL fitting, but even that leaked after a while. Plus I had no idea when I was about to run out of Oxygen.

So next time I bought some oxygen cannisters I got the better regulator too.

[richard080561]

You will need a regulator (£36 https://www.welduk.com/product/regulato ... -cylinder/), an aeration stone (£8 for a basic stone, £17 for a wand) and some tubing at a minimum. Realistically you also want a flow meter (£10.26 https://www.ebay.co.uk/itm/265130660620), or you will run through your oxygen very quickly and need to spent another £25 before long.

You don't need to pay that much for a regulator. You don't need a gauge on it. I know this one doesn't say it is for O2 but it is simliar to the one I have https://weldingsuperstore.co.uk/oxyturb ... 25000.html

You forgot to mention that he will also need a JG fitting to attach the tubomg to the regulator.

I started with the regulator without the gauge - and the problem with it was that the output barb on it doesn't fit any tubing I have, and there wasn't a good JG fitting to replace it with. I started off by cutting down a MFL fitting, but even that leaked after a while. Plus I had no idea when I was about to run out of Oxygen.

So next time I bought some oxygen cannisters I got the better regulator too.

I had to cut down my JG fitting and use some silicon sealant and I have no idea when my O2 will run out..it's been going three years now, brewing roughly once a month.

[Monkhouse]

Thanks so much guys really appreciate the advice

[MashBag]

Big question is... How much did you spend then, in the end?

[man_beach]

I use a simple aquarium air pump with an aquarium air stone. I sterilise the stone after use by bubbling air through it in some sterilising solution.

[aamcle]

A plastic spoon on the end of your drill should fit in and splash well enough if your not going to use O2.

[Lederhosn]

Aeration is very important, esp when fermenting cold (usually 9C). For this 18-25 x 10^6 yeast cells /ml wort at 12Plato are required, and a residual dissolved oxygen content of 7-9 mg/l.

I use welding O2 (it lasts me for years) and an attached flow meter like you would see in an ambulance car (they pop up on ebay from time to time).

In conjunction with good enough stainless Heat Exchanger (from Lupi https://www.lupi-waermetauscher.de/) which brings the wort from 100C to 18C in a few minutes, A maxi310 which I got from a closing pub for about £90 takes it to the pitch temperature at 5-6C. At the end of the hose to the fermenter is a rather cheap venturi tube (used for fertilizers. see ebay) which mixes the oxygen during transfer.

I highly recommend the use of a dissolved oxygen meter (e.g. Extech DO600) when working with pure oxygen. Values in excess of 30mg/l can lead to unwated results.

[Monkhouse]

A plastic spoon on the end of your drill should fit in and splash well enough if your not going to use O2.

This is EXACTLY what I went with in the end! It works flawlessly and the maple stout I’ve just bottled came out at 7.8% abv using this crude but effective method!

[Cobnut]

Aeration is very important, esp when fermenting cold (usually 9C). For this 18-25 x 10^6 yeast cells /ml wort at 12Plato are required, and a residual dissolved oxygen content of 7-9 mg/l.

I use welding O2 (it lasts me for years) and an attached flow meter like you would see in an ambulance car (they pop up on ebay from time to time).

In conjunction with good enough stainless Heat Exchanger (from Lupi https://www.lupi-waermetauscher.de/) which brings the wort from 100C to 18C in a few minutes, A maxi310 which I got from a closing pub for about £90 takes it to the pitch temperature at 5-6C. At the end of the hose to the fermenter is a rather cheap venturi tube (used for fertilizers. see ebay) which mixes the oxygen during transfer.

I highly recommend the use of a dissolved oxygen meter (e.g. Extech DO600) when working with pure oxygen. Values in excess of 30mg/l can lead to unwated results.

I have read this sort of thing in various places, but I have not seen anyone post anything which says definitively that their beers have improved through the use of oxygenation with pure O2. Nor have I seen any published papers that provide this definitive evidence.

If you are able to fill this void, I'd be really interested!

[MashBag]

I have used a crude balloon whisk by hand and an stainless aerator on a drill and on the same recipe can vouch for the fact there appears to be no difference.

[Lederhosn]

I have read this sort of thing in various places, but I have not seen anyone post anything which says definitively that their beers have improved through the use of oxygenation with pure O2. Nor have I seen any published papers that provide this definitive evidence.

If you are able to fill this void, I'd be really interested!

Not sure I expressed it well enough.... One can use sterile or filtered air as well. Pure O2 has the downside that it is easy to overshoot, which can become problematic for the yeast. Thus equipment to measure O2 levels is a good idea.

Aerating to optimum levels helps a lot. Esp when fermenting cold.

It's not about the kind of O2, but getting it to optimum levels which has qualitatively a big impact. With unfiltered air, ones ability to repitch yeast from previous batches without contamination reduces though.

The yeast in the brewery is a very good read if you want to dive deeper into the subject.

Hope this helps.

[MashBag]

Hmm. I often struggle with this and other commercial practises for a couple of reasons.

1. Recipes do not scale linearly and neither do prcoeeses ime.
2. Cost justification
3. Relevance. Commercial objectives are often very different to personal ones.

I am not saying there isn't some learning here, but I start from an analytical perspective because these are ideas are for a different product ($)

Please don't take this as a negative, just explaining my perspective for the larger subject entitled "the big boys do it so that must be the right way".

[Lederhosn]

No problem, i can see where you are coming from.

Indeed, scales aren't the same. There are instances where one has it substantially easier when brewing at smaller scale, there are others when it's a bit if a disadvantage. It doesn't map 1:1 indeed.

Reaching correct oxygenation levels is rather important in both scenarios, unless one doesn't mind the consequences such as higher content if fusel alcohols when over-oxygenating for eg.

It depends how far one wants to push the qualitative side of ones brews.

Someone here suggested this item instead of using DO meters.