Hello Again, The test kits seem to get old. I tested a lot of meteorites with the ebay test kits with good results, but a few months later, they did not work. So you have to test all 500 tests worth in a short time. :
Thanks, Tom Peregrineflier <>< The proudest member of the IMCA 6168 ----- Original Message ----- From: Matson, Robert <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Monday, September 22, 2003 9:01 PM Subject: [meteorite-list] Nickel test kit > Hi Mike, > > The standard nickel test (based on dimethyl glyoxime) can produce > false positives and false negatives because it is very sensitive > to the cleanliness of the containers in which it is carried out. > I haven't experimented any with the kits I've seen listed on eBay > from time to time, so I can't give you any feedback on their > reliability. But I ~can~ tell you that when I performed the full- > blown test in a beaker back in my university days, the results > were very sensitive to how well the glassware had been cleaned. > > Because of that experience 20-odd years ago, I have avoided > nickel testing with candidate iron meteorites. It's much simpler > to just polish a surface and etch it with ferric chloride. > > --Rob > > ______________________________________________ > Meteorite-list mailing list > [EMAIL PROTECTED] > http://www.pairlist.net/mailman/listinfo/meteorite-list > ______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://www.pairlist.net/mailman/listinfo/meteorite-list
