[meteorite-list] Dimethylglyoxime powder for nickel testing

From: Francisco Ocaņa <albireo3000_at_meteoritecentral.com>
Date: Sun, 26 Oct 2008 13:05:33 +0100
Message-ID: <49045D0D.4070408_at_yahoo.es>

I have recently used DMG and nickel allergy test (from Dermadoctor) with
success, even in low metal Chrondrites.

I was supposed to use 99,9% denatured alcohol, but 96% was Ok and a lot
cheaper. Instead muriatic acid I use acetic (vinegar) acid, with good
results (even vinegar worked fine).

And ...of course selfmade test was 50 times cheaper than pre-made nickel
tests.

My 2 cents,

Paco Oca?a
Madrid, Spain

John.L.Cabassi escribi?:
> G'Day List
> A while back some members were interested in DMG. A good friend of
> mine informed me that he had excess, so if anybody is still
> interested, you can email me off-list and I will forward you his email
> address and you can deal with him directly.
>
> Quote:
> "I have quite a bit of DMG I bought not realizing how far a little
> will go. So I am offering some of my surplus for those who wish to
> make their own nickel test kits. I will measure them out in 2 gram
> packets of DMG powder, which will make 200ml of DMG solution. Just
> dissolve the DMG powder in 200ml of denatured alcohol, available in
> hardware stores. The hydrochloric acid needed to ionize the nickel in
> stone meteorites is also available in hardware stores as muriatic or
> pool acid, or in pool stores. And the ammonium hydroxide can be
> purchased in any grocery store, or retail store. This will save you a
> lot of money over buying pre-made nickel test kits. I will write up an
> instructional paper to include with the DMG powder packets"
>
> Thanks for your time.
> Cheers, Johnno
>
Received on Sun 26 Oct 2008 08:05:33 AM PDT