RE: Glyoxal?

I am just looking into this. Chilling is to slow down, help prevent it from
becoming airborne. Why the pH adjustment?

Eric Neilsen Photography
4101 Commerce Street
Suite 9
Dallas, TX 75226
http://e.neilsen.home.att.net
http://ericneilsenphotography.com
 

> -----Original Message-----
> From: Ryuji Suzuki [mailto:rs@silvergrain.org]
> Sent: Sunday, January 15, 2006 12:15 AM
> To: alt-photo list
> Subject: RE: Glyoxal?
>
> She used more concentrated (8%?) and non-acidified EM grade stock
> without special precautions.
>
> I routinely use 25% stock of glut, but the stock is chilled before
> handling, and bring it in a fume hood, to dilute and adjust pH. After
> this point, I can use glut in darkroom with ordinary precaution.
>
>
> On Sat, 14 Jan 2006 22:52:19 -0600, "Eric Neilsen"
> <e.neilsen@worldnet.att.net> said:
> > What did you do Katharine?
> >
> > Eric Neilsen Photography
> > 4101 Commerce Street
> > Suite 9
> > Dallas, TX 75226
> > http://e.neilsen.home.att.net
> > http://ericneilsenphotography.com
> >
> > > -----Original Message-----
> > > From: Ryuji Suzuki [mailto:rs@silvergrain.org]
> > > Sent: Saturday, January 14, 2006 5:07 PM
> > > To: alt-photo list
> > > Subject: Re: Glyoxal?
> > >
> > > On Sat, 14 Jan 2006 14:25:46 -0800, "Katharine Thayer"
> > > <kthayer@pacifier.com> said:
> > >
> > > > I believe you, but after my frightful experience, you couldn't drag
> > > > me near the stuff again.
> > >
> > > But then you were doing exactly what I said, repeatedly, to be
> dangeous.
> > > What am I supposed to say.
> > >
> > > Also, considering comparable toxicity of the two agents, it lacks
> logic
> > > to assume that glyoxal to be safer than glut, even in 30x quantity and
> > > 15x concentration.
> >
Received on Mon Jan 16 10:13:46 2006