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crackacola
Big Daddy


Registered: 12/14/13
Posts: 234
Last seen: 8 years, 9 months
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Forced oxygen "flow hood"?
#19304034 - 12/20/13 05:30 PM (10 years, 1 month ago) |
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Is bottled oxygen free of contams? Could one simply run an oxygen hose from a tank, into a SAB and get a flow hood effect? May be expensive, but if you're only needing it here and there could be more economical than building/buying a flow hood. What do you guys think?
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RogerRabbit
Bans for Pleasure



Registered: 03/26/03
Posts: 42,214
Loc: Seattle
Last seen: 11 months, 4 days
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Re: Forced oxygen "flow hood"? [Re: crackacola]
#19304156 - 12/20/13 05:52 PM (10 years, 1 month ago) |
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Liquid oxygen is, but once it's put into tanks it's not. However, you don't want an oxygen enriched atmosphere near your alcohol torch when you flame sterilize. RR
-------------------- Download Let's Grow Mushrooms semper in excretia sumus solim profundum variat "I've never had a failed experiment. I've only discovered 10,000 methods which do not work." Thomas Edison
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RiparianZoneJunky
hunter/gatherer



Registered: 10/30/11
Posts: 3,055
Loc: Oregon
Last seen: 3 years, 5 months
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Re: Forced oxygen "flow hood"? [Re: RogerRabbit]
#19304168 - 12/20/13 05:55 PM (10 years, 1 month ago) |
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Quote:
RogerRabbit said: Liquid oxygen is, but once it's put into tanks it's not. However, you don't want an oxygen enriched atmosphere near your alcohol torch when you flame sterilize. RR
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crackacola
Big Daddy


Registered: 12/14/13
Posts: 234
Last seen: 8 years, 9 months
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Re: Forced oxygen "flow hood"? [Re: RogerRabbit]
#19304239 - 12/20/13 06:05 PM (10 years, 1 month ago) |
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This is true... Danger!
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FOR TRADE <---- Check out my spores for trade!
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Willy Wonka
Medicine Man



Registered: 12/14/11
Posts: 2,109
Loc: The Other Side
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Re: Forced oxygen "flow hood"? [Re: crackacola]
#19304273 - 12/20/13 06:11 PM (10 years, 1 month ago) |
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If you are using a good still air box there will be no reason to pipe in any O2. Just clean your SAB with a 10% bleach solution before you use it and leave the walls damp. Work quickly and efficiently and you should be just fine.
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Quexl

Registered: 12/17/13
Posts: 1,443
Loc:
Last seen: 8 years, 10 months
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Re: Forced oxygen "flow hood"? [Re: crackacola]
#19304276 - 12/20/13 06:11 PM (10 years, 1 month ago) |
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Speaking as a former torch glass person, the flow dynamics are too turbulent to be reliable, unless you made like a mini laminar box, which kind of defeats the convenience of using the tank you have. You'd need a stable curtain of air, not a jet the way a tank would make.
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cronicr



Registered: 08/07/11
Posts: 61,436
Loc: Van Isle
Last seen: 2 years, 8 days
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Re: Forced oxygen "flow hood"? [Re: Quexl]
#19304317 - 12/20/13 06:16 PM (10 years, 1 month ago) |
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Everything you need to do in this hobby can easily be achieved in your unmodified sab
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  It doesn't matter what i think of you...all that matters is clean spawn I'm tired do me a favor
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crackacola
Big Daddy


Registered: 12/14/13
Posts: 234
Last seen: 8 years, 9 months
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Re: Forced oxygen "flow hood"? [Re: cronicr]
#19304369 - 12/20/13 06:24 PM (10 years, 1 month ago) |
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I would never take the time to do this. haha. The idea popped into my mind and thought I would let it out. Thought maybe someone else could benefit from it.
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FOR TRADE <---- Check out my spores for trade!
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ellomello
XP



Registered: 08/11/08
Posts: 2,423
Loc: babilonUSA
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Oxygen might not be good with an open flame, what about CO2, Argon, Helium, Nitrox, ect? i've read pressurized liquid CO2 is sterile.
To get 'laminar airflow' just build a filter box, that CO2 can blow into, and flow out smooth. No real need for HEPA (though it could help)
This is the only thread i found on the idea, but i think this can work, maybe even better! What you guys think, poke any holes in here?
-------------------- PAY NO ATTENTION TO THE MAN BEHIND THE CURTAIN get back to the garden
some came singing, some come to play, some come for keeping the dark away
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bodhisatta 
Smurf real estate agent


Registered: 04/30/13
Posts: 61,889
Loc: Milky way
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Re: CO2 "flow hood"? [Re: ellomello]
#21775603 - 06/07/15 07:25 PM (8 years, 7 months ago) |
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if it aint broke don't fix it with something more expensive and stupid.
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ellomello
XP



Registered: 08/11/08
Posts: 2,423
Loc: babilonUSA
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This would probably be cheaper, that was the main point, and might have other benefits.
-------------------- PAY NO ATTENTION TO THE MAN BEHIND THE CURTAIN get back to the garden
some came singing, some come to play, some come for keeping the dark away
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