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Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > Note On Bleach
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Old 10-03-2007, 07:59 PM   #1
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Default Note On Bleach

If you use bleach in hot water, it ruins its qualities as a sanitizer. Bleach is meant to be used in room temp or cooler water. However, i see that plenty of people are using it with warm water and that may work fine because the water is so hot, it is killing the bacteria on its own, but just a note, if you CAN , try to use 72 degree or cooler water when using bleach to sanitize your equipment, it will be much safer in terms of the sanitized final product.

I don't use bleach and i'm not sure I come close to condoning it near anything consumable, but i also don't condone the idea of a spoiled batch because of overheated bleach. Beer being abused due to ignorance is just wrong!

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Old 10-03-2007, 08:47 PM   #2
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Or just buy a very inexpensive no rinse sanitizer and be done with it.

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Old 10-03-2007, 08:52 PM   #3
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Quote:
Originally Posted by its02003
If you use bleach in hot water, it ruins its qualities as a sanitizer. Bleach is meant to be used in room temp or cooler water. However, i see that plenty of people are using it with warm water and that may work fine because the water is so hot, it is killing the bacteria on its own, but just a note, if you CAN , try to use 72 degree or cooler water when using bleach to sanitize your equipment, it will be much safer in terms of the sanitized final product.

I don't use bleach and i'm not sure I come close to condoning it near anything consumable, but i also don't condone the idea of a spoiled batch because of overheated bleach. Beer being abused due to ignorance is just wrong!
I've actually read that bleach on it's own isn't a sanitizer. In order to make it a sanitizer, you need to lower the PH with vinegar. Mix bleach into water, then add vinegar (not sure of the portions, and never bleach and vinegar directly together) to lower the PH, in order to make it a sanitizer. Otherwise, it's a disinfectant.
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Old 10-03-2007, 09:15 PM   #4
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Default Please stop

As a Microbiologist who has suffered through many chemistry classes and countless lab safety courses, it pains me to see incorrect advice given with the "I heard" reference. Especially when it results in dangerous advice.
Bleach kills everything with very few exceptions (none of which are likely to be in your house). The temperature doesn't really matter. Although hot water will volatilize the bleach faster, it will not make it impotent unless you are actively heating it for a fair amount of time. Hot water and bleach will make a lot more fumes, so careful sticking your head in an enclosed space with it.
Adding an acid (like vinegar) to bleach (acid is low pH, base is high pH) will create heat and if you add strong enough acid to strong enough bleach it can cause a LOT of heat quickly. If you do this in a closed container, that is a bomb. Even if the top is open, it might geyser into your face. The detergent action and a fair amount of it's universal killing power is based on it's low pH, so neutralizing it is not a good idea.
Bleach is very good at what it does, but I second the no-rinse sanitizer nod for most applications.

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Old 10-03-2007, 09:20 PM   #5
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Quote:
Originally Posted by srm775
I've actually read that bleach on it's own isn't a sanitizer. In order to make it a sanitizer, you need to lower the PH with vinegar. Mix bleach into water, then add vinegar (not sure of the portions, and never bleach and vinegar directly together) to lower the PH, in order to make it a sanitizer. Otherwise, it's a disinfectant.
Quite possibly the worst advice ever. NEVER MIX ACIDS (like vinegar) WITH BLEACH!!! You could potentially liberate chlorine gas which, even in small doses, is quite LETHAL!

For that matter, don't mix bleach with anything other than water.
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Old 10-03-2007, 09:25 PM   #6
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285 gallons of beer using bleach and water as a sanitizer, rinsed with 135 degree tap water and narry a bad sip in the bunch.

No "ignorance" in this brewshop.

Oh...and I insist on secondary conitioning...

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Old 10-03-2007, 09:30 PM   #7
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The reason you shouldn't use hot water is because it releases chlorine gas.
Not because it stops it working.
It will still work.

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Old 10-03-2007, 09:42 PM   #8
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We're turned a corner, gents.

Bleach (hot) vs Bleach (cold) is the new Bleach argument.

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Old 10-03-2007, 09:45 PM   #9
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I got inspired after the bleach + acid part of this post. Here's why you should NEVER do it:

[youtube]cLDgA0aCjDA[/youtube]

Fellas, that's just a few tablespoons of household bleach and a strong acid. Note the greenish swirls of CHLORINE GAS. Just that amount is enough to kill if you were to take a deep breath over top of the flask. I wore protective gear (respirator) and did this outside for a reason...

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Old 10-03-2007, 09:47 PM   #10
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Quote:
Originally Posted by Yuri_Rage
Note...I wore protective gear and did this outside for a reason...
Like when you do plasma cutting.
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