degreasing - relaxing - chemicals in water

[Barb Beck]

Hi,
< condensation which should not contain the chemicals in the water
<straight from the tap

This statement is not really ture.  Anything that is volatile will appear in
the condensate.  If it is more volatile it will theoretically be in higher
concentrations in the condensate until the system equilibrates as the
temperatures of the butterfly wing and liquid below equilibrate.  Something
like plain table salt dissolved in water is certainly not volatile and will
not appear in the condensate.

Barb Beck



-----Original Message-----
From: owner-leps-l at lists.yale.edu [mailto:owner-leps-l at lists.yale.edu]On
Behalf Of Guy Van de Poel & A. Kalus
Sent: January 14, 2002 5:01 AM
To: Ron Gatrelle; MWalker at gensym.com; leps-l at lists.yale.edu
Subject: Re: degreasing


I will try (clothes) dryer water, as that should not contain any ions
(chemicals) (or de-ionised water).
However I do not expect that to be any better, as also others found that it
was the condensation dripping on the specimens causing the greenish
coloring - condensation which should not contain the chemicals in the water
straight from the tap.

But nobody seems to be aware of a cure ?

Guy.

----- Original Message -----
From: Ron Gatrelle <gatrelle at tils-ttr.org>
To: <MWalker at gensym.com>; <leps-l at lists.yale.edu>
Sent: maandag 14 januari 2002 4:02
Subject: Re: degreasing


>
> ----- Original Message -----
> From: "Mark Walker" <MWalker at gensym.com>
> To: <leps-l at lists.yale.edu>
> Sent: Sunday, January 13, 2002 5:45 PM
> Subject: RE: degreasing
>
>
> > The most serious case of the phenomenon described by Richard Worth that
I
> > have seen occurred on a very large Pierid I caught in Rishikesh, Uttar
> > Pradesh, India in 2000.  I relax with only water, so Stan's suggestion
> > wouldn't apply.  The bug was big and white - with black stripes and a
> slight
> > bluish tint.  I thought I had spilled ink on the wings at first - the
> > blue-green staining ran like water colors.  There was significant
> > condensation in the relaxer, and it was little drops of water that were
> the
> > culprits.  I hadn't seen this before - at least not to this extent.  It
> was
> > almost as if the bug was painted, and I was ruining the masterpiece with
> > exposure to water.
> >
> > I have no idea what chemical is responsible, but the secret is clearly
> > keeping the specimen away from condensation.
> >
> > Mark Walker.
> >
>
> One might try water without ammonia, chloramines, or chlorine.  What comes
> out of the tap is pretty chemical laden -  unusable as is for fish.  Treat
> your tap water with something like AmQuel first and see what happens on a
> disposable specimen.
>
> Ron
>
>
>
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