Does anyone have experience with Spex 5100 or 8000M Mixer Mills, or
similar competitors' products?
The Spex equipment is certainly more affordable than others I have seen,
but that worries me.
The Spex mill seems to have sample vials and grinding balls made from a
wide variety of materials:
Agate, polystyrene, polycarbonate, polyethylene, stainless steel,
"hardened steel," tungsten carbide, zirconia, alumina ceramic vials
Methacrylate, zirconia, tungsten carbide, stainless steel grinding
Some seem attractive from a metals contamination standpoint, but I
wonder about effectiveness, as well as if the machine does a good job
without falling apart in two months or contaminating samples like crazy.
R. Steven Pappas, Ph.D.
Emergency Response & Air Toxicants Branch
Centers for Disease Control & Prevention
4770 Buford Hwy. NE, M.S. F-44
Atlanta, GA 30341-3717
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