[pure-silver] Re: Toning formulas
- From: "Koch, Gerald" <gkoch02@xxxxxxxxxx>
- To: <pure-silver@xxxxxxxxxxxxx>
- Date: Tue, 25 Apr 2006 16:13:46 -0400
However, at higher concentrations H2S desensitizes the nose and can no
longer be detected. This has caused numerous deaths from H2S poisoning.
Jerry
-----Original Message-----
From: pure-silver-bounce@xxxxxxxxxxxxx
[mailto:pure-silver-bounce@xxxxxxxxxxxxx] On Behalf Of Sandor Mathe
Sent: Tuesday, April 25, 2006 4:10 PM
To: pure-silver@xxxxxxxxxxxxx
Subject: [pure-silver] Re: Toning formulas
I do know that H2S is one of the chemicals that the human nose
can detect at extremely low concentrations. If If remember right, like
the mercaptans in skunk spray it can be detected in the parts per
billion range.
>It's easy to fog a piece of undeveloped paper if you expose it
to the
>fume coming out of the tray for a few moments and then develop
normally.
>Exposure to H2S gas creates silver sulfide cluster on silver
halide
>surfrace and when this is large the crystal is developable. It
doesn't
>take many molecules on each crystal to render the crystal
developable.
Sandor
Other related posts:
