Ryuji,
Can you explain in layman's terms why the sodium disulphite might interfere
with dichromate or sizing? Are you thinking it might soften the gelatin? Or
what? If it is in a hardener made for hardening gelatin why might it
interfere with a sizing process used to harden gelatin? Inquiring minds
want to know.
Chris
> From: Clay <wcharmon@wt.net>
>> After my post, I tracked down the MSDS sheet. It says it has 2-5%
>> Glut, 1-2% acetic acid and 5-10% sodium disulphite.
>
> The last one is strange. They might've added it to prolong shelf life
> of the glut but I bet it may upset the chemistry of dichromate
> process. (Even if it's for silver gelatin process, I wouldn't add
> sulfite of any kind to the sizing solution.)
>
> Ryuji
Received on Sun Sep 4 16:14:28 2005
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