plumber
Well-Known Member
How long do you aerate using pure O2 through a stainless air stone befor pitching? I've been using an air pump and filter but just got an O2 regulator. Do you still use the filter when using O2
using O2 to aerate
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I use the 02 bottle with a filter and a stone....I give it a 2 minute burst of O2.
LooyvilleLarry
Well-Known Member
why the filter? I soak my stone and O2 line in Starsan and use it that way.
camiller
Well-Known Member
Yeah because welders don't mind if their gas is contaminated.
Oxygen generators for home use like mom had when she was fighting lung cancer only produce 94% pure O2 for breathing. You can damn sure bet that industrial users of gas want gas that is much purer. I wouldn't sweat it.
I let it go for about 3-5 min myself. I get the O2 from The Home Depot and I have yet to use an air filter on my aerator and I am still alive and the Beer still tastes good. Does the Filter really make that much of a difference?
I dunno....mine came with it. I actually use it as the point where I dissasemble the wand/hose from the rest of the unit for storage.
From Wyeast (Wyeast Laboratories. Customer Service FAQs):
Optimal O2 levels are 10-15ppm and to achieve 12ppm you should use O2 through a stone for 1 minute.
Be careful, you can over oxygenate.
Optimal O2 levels are 10-15ppm and to achieve 12ppm you should use O2 through a stone for 1 minute.
Be careful, you can over oxygenate.
avanhemert
Member
Wow thanks. I have been using pure O2 through a stainless air stone as well from a hospitable grade tank w/reg and I was just wondering how long to aerate. However, I may have been over oxygenating by letting it go for a little long but not to long because it starts to foam and I didn’t think that was too good.
Since I don't seal up the primary while aerating, I see no reason to use a HEPA filter.
Your beer usually has 'other bugs' in it...but optimal pitching means your desired yeast does the fermentation and out competes everything else.
I do about 45-60 seconds of O2, and have pretty wild fermentations...on 5 gallon batches.
Your beer usually has 'other bugs' in it...but optimal pitching means your desired yeast does the fermentation and out competes everything else.
I do about 45-60 seconds of O2, and have pretty wild fermentations...on 5 gallon batches.
giligson
Well-Known Member
Industrial O2 is clean enough for human consumption but food grade O2 is usually not considered pure enough for industrial/scientific applications. There are no bugs in an O2 tank - from a biological point of view its a lethal environment. Just keep your lines and stones clean.
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