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Anonymous
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Post deleted by Anno
#5969624 - 08/16/06 02:23 PM (17 years, 5 months ago) |
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76degrees
Apprentice

Registered: 06/08/06
Posts: 350
Loc: Middle Earth
Last seen: 17 years, 4 months
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Re: 70% vs 99% alcohol [Re: ]
#5969630 - 08/16/06 02:25 PM (17 years, 5 months ago) |
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It's better because it doesn't evaporate so fast. 70% It actually stays on the surface long enough to get rid of bacteria.
-------------------- The world is changed. I feel it in the water. I feel it in the earth. I smell it in the air. Much that once was is lost, for none now live who remember it.
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outlawimmortal
the originaloutlaw

Registered: 11/03/05
Posts: 158
Last seen: 14 years, 25 days
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Re: 70% vs 99% alcohol [Re: ]
#5969727 - 08/16/06 02:48 PM (17 years, 5 months ago) |
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should be fine. i couldn't survive in 70% alcohol (i would get a hell of a hangover ) and i doubt our old friend cobweb mould could either.
but seriously though it should be fine.
-------------------- ...i just got thrown out of a bakery for asking if they sold lambs bread
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GreenScreen
bidibodi bidibu


Registered: 07/02/06
Posts: 914
Loc: ation
Last seen: 5 years, 18 days
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Re: 70% vs 99% alcohol [Re: 76degrees]
#5969740 - 08/16/06 02:51 PM (17 years, 5 months ago) |
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Quote:
76degrees said: It's better because it doesn't evaporate so fast. 70% It actually stays on the surface long enough to get rid of bacteria.
70% doesnt kill anymore bacteria than 91%, but it doesnt kill any less either
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tonyperez420
Shaman Rasta

Registered: 11/03/04
Posts: 1,234
Last seen: 10 years, 11 months
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70 % is perfect
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monstermitch
Growing in Bags Doesn't Work


Registered: 02/10/06
Posts: 3,911
Loc: Arizona Bay
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I mix 70% and 91% half and half.
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hyphae
born to grow


Registered: 12/13/02
Posts: 6,228
Loc: the rain forests
Last seen: 12 years, 8 months
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Quote:
GreenScreen said:
Quote:
76degrees said: It's better because it doesn't evaporate so fast. 70% It actually stays on the surface long enough to get rid of bacteria.
70% doesnt kill anymore bacteria than 91%, but it doesnt kill any less either
As 76degrees said 70% works even better for the exact reason stated. WTG bro!!
-------------------- Getting the most out of your casings!, A pinning strategy. Oyster Shell "Flour" $2 for 1lb. a hell of a deal Not what is overlay but rather what overlay is Gas Exchange vs. FAE "We all have priorities. I used a closet once setup a nice little lab trouble was all the shit that was in there ended up in the bedroom that pissed off the GF then I ended up dumping her as she was getting in the way of my sterile culture technique! Ya I got priorities too!!!"
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trentallica
Lord Trentnar


Registered: 05/01/06
Posts: 797
Loc: virgina
Last seen: 8 years, 8 months
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Re: 70% vs 99% alcohol [Re: hyphae]
#5971005 - 08/16/06 08:43 PM (17 years, 5 months ago) |
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ok i took a microbiology class not too long ago. i cant remember the exact reason why but 70% is better then 90% for the purpose of sterilization. the alcohol needs to act or react in some way with the elements of the water in the solution in order to destroy the cell walls of bacteria. the alcohol needs to have access to the water in order to work, so 70% is better. now if you are using the rubbing alcohol as a cleaning agent for sat your bong, or you just like to set shit on fire then by all means get the 90%.
-------------------- The only ones for me are the mad ones..........
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76degrees
Apprentice

Registered: 06/08/06
Posts: 350
Loc: Middle Earth
Last seen: 17 years, 4 months
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Re: 70% vs 99% alcohol [Re: hyphae]
#5972234 - 08/17/06 07:44 AM (17 years, 5 months ago) |
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Quote:
hyphae said:
Quote:
GreenScreen said:
Quote:
76degrees said: It's better because it doesn't evaporate so fast. 70% It actually stays on the surface long enough to get rid of bacteria.
70% doesnt kill anymore bacteria than 91%, but it doesnt kill any less either
As 76degrees said 70% works even better for the exact reason stated. WTG bro!!
Thx Hyphae! I also heard a 10% bleach solution is better than 100% because it needs the H2O to work it's magic. But don't quote me on that. I haven't found the diffinitive answer on that yet. And obviously have not taken chemistry or a house hold chemicals class, lol.
-------------------- The world is changed. I feel it in the water. I feel it in the earth. I smell it in the air. Much that once was is lost, for none now live who remember it.
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RogerRabbit
Bans for Pleasure


Registered: 03/26/03
Posts: 42,214
Loc: Seattle
Last seen: 11 months, 3 days
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Re: 70% vs 99% alcohol [Re: 76degrees]
#5972261 - 08/17/06 08:06 AM (17 years, 5 months ago) |
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Actually, the reason 70% is more effective is because living cells admit water through the cell membrane by way of osmosis. If there is water mixed in with the alcohol, it's admitted into the interior of the cell where it does the most damage. 99% alcohol can't penetrate the cell wall as effectively, therefore it's less effective. 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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eclipse
Stranger


Registered: 07/10/06
Posts: 173
Last seen: 14 years, 9 months
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Re: 70% vs 99% alcohol [Re: ]
#5972594 - 08/17/06 11:39 AM (17 years, 5 months ago) |
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99% is real high,did you mean 91%?Also as was stated above by 76 and hyphae 70% is better for it slower evap rate but for that same exact reason I prefer 91% (I know a few others on here also do including RK)for cleaning out my glove box and other equipment.In some situations you want it to evaporate quicker cause you do not want any puddles in your GB in case you drop something that you do not want to touch alcohol (agar wedge,spore print etc.) or you just want a dry GB quicker.I guess you just have to look at exactly what you are trying to accomplish and exactly what you are going to be doing in the alcoholed environment.
-------------------- All that is now All that is gone All thats to come And everything under the sun is in tune But the sun is eclipsed by the moon. PF
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hyphae
born to grow


Registered: 12/13/02
Posts: 6,228
Loc: the rain forests
Last seen: 12 years, 8 months
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Quote:
RogerRabbit said: Actually, the reason 70% is more effective is because living cells admit water through the cell membrane by way of osmosis. If there is water mixed in with the alcohol, it's admitted into the interior of the cell where it does the most damage. 99% alcohol can't penetrate the cell wall as effectively, therefore it's less effective. RR
Also known as "Osmotic response". Quite interesting I must say.
-------------------- Getting the most out of your casings!, A pinning strategy. Oyster Shell "Flour" $2 for 1lb. a hell of a deal Not what is overlay but rather what overlay is Gas Exchange vs. FAE "We all have priorities. I used a closet once setup a nice little lab trouble was all the shit that was in there ended up in the bedroom that pissed off the GF then I ended up dumping her as she was getting in the way of my sterile culture technique! Ya I got priorities too!!!"
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baltazar
Quiet dreamer

Registered: 02/23/04
Posts: 746
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Re: 70% vs 99% alcohol [Re: 76degrees]
#5973023 - 08/17/06 02:10 PM (17 years, 5 months ago) |
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Quote:
76degrees said: It's better because it doesn't evaporate so fast. 70% It actually stays on the surface long enough to get rid of bacteria.
Well maybe the reason because the 70% alcohol stays longer on the surface is because after the alcohol evaporates, you have the other 30% of water left
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