[meteorite-list] Dimethylglyoxime powder for nickel testing

[Francisco Ocaña]

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 Ocaña
Madrid, Spain

John.L.Cabassi escribió:

> 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

>