Biofine

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chris2012
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Biofine

Post by chris2012 » Fri Jun 23, 2017 10:44 am

Just saw this:
http://brulosophy.com/2016/05/23/the-ge ... t-results/

Don't spose anyone know a UK seller of this?

Cheers

sbond10
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Re: Biofine

Post by sbond10 » Fri Jun 23, 2017 10:50 am

No but id also be interested if you find one

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Hanglow
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Re: Biofine

Post by Hanglow » Fri Jun 23, 2017 1:58 pm

It's just an inorganic auxillary finings isn't it? brupacks make some
http://www.brupaks.com/auxiliary%20finings.htm


edit:
reading the comments someone seems to think that Biofine Clear is banned in europe, so maybe it's a bit different

chris2012
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Re: Biofine

Post by chris2012 » Fri Jun 23, 2017 4:54 pm

Ah I didn't realise it was banned eek, just reading those comments.

edit: discussions.probrewer.com/attachment.php?attachmentid=3285&d=1237131765

I'm confused now, that pdf doesn't mention aluminium at all? But silicon dioxide

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alexlark
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Re: Biofine

Post by alexlark » Sat Jun 24, 2017 3:35 pm

Was about to suggest gelatine, realised that's what they were testing against. Came out good though!

chris2012
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Re: Biofine

Post by chris2012 » Sat Jun 24, 2017 3:49 pm

Mmm. I normally use gelatine, was curious about this stuff too.

simon12
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Re: Biofine

Post by simon12 » Sat Jun 24, 2017 4:37 pm

From what I can tell is a form of silicon dioxide/silic acid in suspension also known as Kieselsol the same as this https://www.home-brew-hopshop.co.uk/win ... -1850.html

chris2012
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Re: Biofine

Post by chris2012 » Sat Jun 24, 2017 4:49 pm

Cheers simon!, doing some reading:

Yeast has a negative charge apparently.
Gelatine has a positive charge which can attract yeast.

Interestingly Kieselsol (which you're right seems to be the same stuff as Biofine, as it's silicon dioxide) has a negative charge, so I don't see how that can cause the yeast to drop out - unless there's a different mechanism which causes it to drop out? i could see it working on proteins though.

They mention Kieselsol is often used with Chitosan (which does have a positive charge).

I wouldn't mind getting both Kieselsol & Chitosan now, as maybe some of my issues are also protein haze.

https://winemakermag.com/26-a-clearer-u ... ing-agents is what I was reading.

I just found http://www.the-home-brew-shop.co.uk/aca ... llons.html
might get some to play with.

Edit: actually reading https://www.home-brew-hopshop.co.uk/win ... -1850.html I might use gelatine and Kieselsol

Also:
"When used with gelatine, the gelatine is added to the wine first, and then 24 to 48 hours later, a very small amount of Kieselsol is added, and should be racked off within 2 weeks. Kieselsol also works with chitosan (see the section on chitosan earlier). "

chris2012
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Re: Biofine

Post by chris2012 » Wed Jun 28, 2017 2:53 pm

I just ordered some Kieselsol and Gelatine. I'll do what they mention and crash to like 0.5C add gelatin and then leave for ~3 days, then add Kieselsol, I'll try and take some piccys.

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