U of S | Mailing List Archive | alt-photo-process-l | Re: Tannic Acid aka ?

Re: Tannic Acid aka ?



yes
On Aug 31, 2009, at 6:43 PM, Jacek Gonsalves wrote:

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