RE: Glyoxal?

Thanks, probably it's about my dichromate concentration / exposure and not using an appropiate clearing agent (only water).

Regards,
Loris.

-----Original Message-----
From: Marek Matusz [mailto:marekmatusz@hotmail.com]
Sent: 18 Ocak 2006 Çarşamba 01:46
To: alt-photo-process-l@sask.usask.ca
Subject: Re: Glyoxal?

Loris,
In my practice tere is very little difference after water wash. It is very,
very faint grey I wisj I could quantify it better). If my highlights were
that clear after multiple gum printing I would be very happy. I alway use
sodium metabisulfite clearing bath as a last step to clear the dichromate
stain anyways, so I did not bother to include the extra step during the
siezing process, nor that the barely visible grey would warrant that in my
opinion. My chromium concentration is very low for the siezing. Marek

>From: Loris Medici <loris.medici@altinyildiz.com.tr>
>Reply-To: alt-photo-process-l@sask.usask.ca
>To: alt-photo-process-l@sask.usask.ca
>Subject: Re: Glyoxal?
>Date: Tue, 17 Jan 2006 22:19:18 +0200
>
>Marek, do you use any clearing agent for gelatine/dichromate size? I
>noticed the paper base warms when sized with this combo... I rinsed the
>sized papers for about 1 hour, yet there was a pretty perceptible
>difference between the sized and unsized paper base.
>
>Regards,
>Loris.
Received on Wed Jan 18 02:26:13 2006