I have been able to get some antioxin sbt (45% potassium meta, 45% ascorbic acid, 10% gallotannines).
Cf. http://www.lowoxygenbrewing.com/wp-content/uploads/2016/11/ANTIOXINSBT.pdf
Any suggestions on what to do with it? I already have and use sodium meta and brewtan b.
5-10g/hl in the water before dough in.
Yes, obviously, I can read the instructions 
- but I was looking for something more interesting, like combination with so-meta and/or btb, or not in mash, etc.
No, SBT is basically the holy trinity of SMB, AA, and BTB. Deoxygenate the water, add SBT and call it a day.
Gallotannins is 10%. So at 10g/hl we get 1g/hl gallotannins which is a lot less than the recommended 8 grams per 120 liters in the mash for BTB.
Does anyone have a MSDS, or sheet showing what BTB gallotannin % is?
Is this product more efficient than only using Sodium Metabisulfite?
Only thing I can find is that BTB contains max 1% gallic acid http://www.ingredientsnetwork.com/brewtan-b-prod645735.html
Supposedly! Its another way for folks to lower their SMB rate while still seeing the benefits of a much larger dose, without the side effects (too much sulfur).
Yea so without knowing the materials in it and the %'s, we can’t say if the dosage rates are true.
Homo- where did you get that ratio from (45/45/10)? I am speaking with them directly and it’s not aligning. Thanks!
Really cool, is this available to home brewers?
The smallest amount you can buy is 1 kg. A fellow-homebrewer bought it (directly from Italy), and distributed it amongst a number of people. He printed the composition on a sticker to send along. I’ve asked him where he got that information from…
[EDIT: apparently it was printed on the 1 kg package, and he copied it on a sticker. The order was:
Antioxin SBT kg 1 3353712 1 €24.50]
[EDIT2: it’s not Aromax, right? That has a different composition: http://www.aebafrica.co.za/antioxy/AROMAX_depliant_inglese.pdf]
Ok, cool. Yea its not Aromax.
No, not in the US.