September 2005 Alt-photo-process-L: (no subject)

From: Hamish Stewart ^lt;hamish.stewart@gumphoto.demon.co.uk>
Date: 09/12/05-11:47:23 AM Z
Message-id: <BF4B7DBB.C390%hamish.stewart@gumphoto.demon.co.uk>

Maria

I mix ammonium dichromate at a 28% solution and use it at a standard 1:1
dilution with gum/pigment, no further dilution with water. In my experience
Ammonium dichromate at a saturated solution prints faster and with with
lower contrast than a saturated (15%) potassium dichromate solution.

Regards

Hamish Stewart Gum Bichromate Photographer - http://www.gumphoto.co.uk

> From: maria ahlberg <mariaahlberg13@hotmail.com>
> Reply-To: alt-photo-process-l@sask.usask.ca
> Date: Sun, 11 Sep 2005 11:38:34 +0000
> To: alt-photo-process-l@sask.usask.ca
> Subject: Re:
>
> I am curious because i have never used ammonium salt and now i have i friend
> who can get me ammonium salt and then it´s new for me, a have never worked
> with ammonium salt.
> I would be glad for some instructions howe to mix this salt with.
> Maria
>
> <BLOCKQUOTE style='PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #A0C6E5
> 2px solid; MARGIN-RIGHT: 0px'><font
> style='FONT-SIZE:11px;FONT-FAMILY:tahoma,sans-serif'><hr color=#A0C6E5
> size=1>
> From: Joe Smigiel <jsmigiel@kvcc.edu> Reply-To:
> alt-photo-process-l@sask.usask.ca To:
> alt-photo-process-l@sask.usask.ca Subject: Re: Date:
> Sat, 10 Sep 2005 19:44:00 -0400 >Mariah, > >I
> believe you will find most practitioners on this list usually use
> the >ammonium salt. I prefer the kallium (potassium) salt
> however. > >May ask ask why you are
> curious? > >Joe > > >>>
> mariaahlberg13@hotmail.com 09/10/05 1:33 PM >>> >I am
> wondering if there is anyone on the list who uses
> ammonium >bichromate >instead of kalium in gum
> printing. >Maria Ahlberg
> Sweden > > > </BLOCKQUOTE>
>
>
>
Received on Mon Sep 12 11:48:46 2005