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Fermenter Seals And Proxitane


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26 replies to this topic

#1 Bruce2

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Posted 01 September 2009 - 12:50 PM

For those who may not be aware this is what happens to rubber fermenter seals when left in contact with a 5mls per litre solution of proxitane fro a prolonged period. This seal after being left by accident for six weeks looks a little like it has bad case of leprosy.Attached File  oring.jpg   121.49KB   6 downloads

#2 raven19

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Posted 01 September 2009 - 01:47 PM

Ditching it and buying a replacement? Drats! :(

#3 Fents

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Posted 01 September 2009 - 01:48 PM

what is proxitane exactly? cleaner, sanitiser?

#4 Online Brewing Supplies

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Posted 01 September 2009 - 02:09 PM

what is proxitane exactly? cleaner, sanitiser?

Sanitiser, but closest thing you will get to a steriliser. Does like to eat rubber though.
GB

Edited by Gryphon Brewing, 01 September 2009 - 02:10 PM.


#5 Bruce2

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Posted 01 September 2009 - 03:13 PM

It is a mix of Peroxacetic acid, Hydrogen Peroxide and Acetic acid. Very good at killing bugs that like to do disgusting things to your beer, though you need to use care in handling the undiluted product and definitely out of reach of children etc.

#6 Online Brewing Supplies

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Posted 01 September 2009 - 03:29 PM

though you need to use care in handling the undiluted product and definitely out of reach of children etc.

And most brewers ! It F..'ing dangerous.
GB

#7 browndog

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Posted 01 September 2009 - 04:15 PM

For those who may not be aware this is what happens to rubber fermenter seals when left in contact with a 5mls per litre solution of proxitane fro a prolonged period. This seal after being left by accident for six weeks looks a little like it has bad case of leprosy.Attached File  oring.jpg   121.49KB   6 downloads


Throw your seals away, you don't need them, they are just another place for nasties to hide.

cheers

Browndog

#8 Cocko

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Posted 01 September 2009 - 04:28 PM

I left my proxitane, the un-mixed bottle, in the bottom of a dead fridge last summer... temperature hit 30+ and the bottle expanded and leaked about 200-300ml... It ate into the floor of the fridge :o and was a right bastard to clean up.... killer stuff. That said, does an awesome job if handled with care.

It now lives wrapped in about 5 bags in my keg fridge - so another tip, store it cold!!


:icon_cheers:

#9 Online Brewing Supplies

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Posted 01 September 2009 - 05:24 PM

I left my proxitane, the un-mixed bottle, in the bottom of a dead fridge last summer... temperature hit 30+ and the bottle expanded and leaked about 200-300ml... It ate into the floor of the fridge :o and was a right bastard to clean up.... killer stuff. That said, does an awesome job if handled with care.

It now lives wrapped in about 5 bags in my keg fridge - so another tip, store it cold!!


:icon_cheers:

It ate my wood router bench top. :(
GB

#10 Darren

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Posted 01 September 2009 - 05:31 PM

It is a mix of Peroxacetic acid, Hydrogen Peroxide and Acetic acid. Very good at killing bugs that like to do disgusting things to your beer, though you need to use care in handling the undiluted product and definitely out of reach of children etc.



I would have thought that mixture have explosion potential?

cheers

Darren

#11 Adamt

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Posted 01 September 2009 - 06:08 PM

I would have thought that mixture have explosion potential?

cheers

Darren


Nope, H2O2 and acetic acid are the reagents to make peracetic (proxitane), they're added to keep the equilibrium, otherwise the peracetic will decompose.

#12 Rudi 101

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Posted 01 September 2009 - 06:10 PM

you're really selling this stuff guys, sounds like a great chemical to have around your beer...

#13 Adamt

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Posted 01 September 2009 - 06:12 PM

I'm assuming that's sarcastic? It's hard to tell with text!

It's good if people are put off by things like proxitane and caustic soda. If you're not sure you know what you're doing, you SHOULD NOT be using it.

#14 Sunshine_Brewer

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Posted 01 September 2009 - 06:21 PM

I'm assuming that's sarcastic? It's hard to tell with text!

It's good if people are put off by things like proxitane and caustic soda. If you're not sure you know what you're doing, you SHOULD NOT be using it.


It's good gear! Our local micro uses the stuff, just don't get it on your skin when it's undiluted...
I think it creates oxygen for the yeast after the fermenter is sanitised??

#15 Bruce2

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Posted 01 September 2009 - 07:02 PM

Seem to have created a little interest. It is an excellent product, just make sure understand all the OH&S issues associated with this (and other similar) products prior to their use.

#16 Darren

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Posted 01 September 2009 - 07:05 PM

Adam,

Pages 2 and 3 from this msds confirm my suspicions

http://www.solvayint.....A 8.1.0.1.pdf

Certainly not the sort of thing that should be used in the back shed or around kids

cheers

Darren

#17 OzMick

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Posted 01 September 2009 - 07:29 PM

you're really selling this stuff guys, sounds like a great chemical to have around your beer...


It is an almost ideal sanitiser to have around beer! Acetic acid is what oxidised alcohol is, and peroxide is just an oxidising agent, so contamination just shows signs of premature aging.

But not a good thing to have around exposed skin however...

#18 leiothrix

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Posted 01 September 2009 - 08:02 PM

Proxitane is incompatible with strong acids, alkalis, reducing agents, oxidising agents, rust, metals and their compounds, resins, promoters, accelerators and combustible materials.


Proxitane solutions in contact with eyes can cause severe and permanent corneal damage. Vapor from proxitane can irritate and inflame the mucous membranes of the nose and throat. Skin contact with concentrated proxitane for prolonged periods of time can result in thermal and/or chemical burns.


sounds like fun stuff ;)

#19 beersom

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Posted 02 September 2009 - 08:43 AM

Certainly not the sort of thing that should be used in the back shed or around kids

cheers

Darren


Indeed.
Certainly not the easiest Sani for home use, but in a commercial sense this stuff is just about the ducks nuts - cheap, re-useable, safe and with extraordinarily low contamination issues.
At home I use Iodophor or Starsan.
At work it is Peroxitane all the way....

#20 T.D.

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Posted 02 September 2009 - 09:41 AM

I use this stuff at home a bit, its bloody good stuff, just not something that you want if you have kids running around or something. Generally its what I use to sanitise my kegs and to use in a spray bottle. I use Iodophor for sterilising fermenters and hoses etc.