Re: glyoxal yellowing now: How do you know it's hard?

> What's the polymer/macromolecule composition of your emulsion and what
> is the pH? (also specify the type of gelatin, if known) What
> hardener(s) do you use? Is 5mg/g significantly effective?

Meanwhile I've collected several brands of gelatin. At this moment
I am dealing with Aldrich's 300 bloom, made from swine skin. No idea about
its pH. Hardening is carried out by chrome alum + heat. And yes, the 5mg/g
silane is sufficient to provide good adherence.

Martin

----- Original Message -----
From: "Ryuji Suzuki" <rs@silvergrain.org>
To: <alt-photo-process-l@sask.usask.ca>
Sent: Monday, February 07, 2005 8:25 AM
Subject: Re: glyoxal yellowing now: How do you know it's hard?

> From: MARTINM <martinm@SoftHome.net>
> Subject: Fw: glyoxal yellowing now: How do you know it's hard?
> Date: Mon, 07 Feb 2005 07:02:13 +0100
>
> > I didn't find them right now but for my emulsions I usually add
> > approximately 5mg silane (from a a 5% methanol/silane stock
> > solution) per gram gelatin.
>
> What's the polymer/macromolecule composition of your emulsion and what
> is the pH? (also specify the type of gelatin, if known) What
> hardener(s) do you use? Is 5mg/g significantly effective?
>
> --
> Ryuji Suzuki
> "Well, believing is all right, just don't let the wrong people know
> what it's all about." (Bob Dylan, Need a Woman, 1982)
Received on Tue Feb 8 04:59:58 2005