Tannic Acid aka ?

To: alt-photo-process-l@usask.ca
Subject: Tannic Acid aka ?
From: Jacek Gonsalves <jacek@jagnight.com>
Date: Tue, 01 Sep 2009 09:43:48 +0800
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Hi all,

Just looking at toning my Cyanotypes. One ingredient is Tannic Acid. Is this the same as Wine Tannin which comes in a powder form? As my local wine/brew shop has this at quite a cheaper price than my Chemical supplier.

Cheers
Jacek

Follow-Ups:
- Re: Tannic Acid aka ?
  - From: Mark Kronquist <mak@teleport.com>

References:
- Re: Paper - baby oil Digi Negs
  - From: Argon3@aol.com
- Re: Paper - baby oil Digi Negs
  - From: Judy Seigel <jseigel@panix.com>