We have a SPEX 8000 M Mixer/Mill (Catalog No. 8000M) and we use it
everyday, including weekends. It has been used for more than a year
without any problem.
Our samples are soft particles, so we use it mainly for mixing purpose.
We use Polystyrene Vial (Spex Industries, Inc. Catalog No. 6133) with
Plastic Ball (Spex Industries, Inc. Catalog No. 3112). The analytes are
low level Fluorine, Chlorine and Sulfur in solid samples. We have never
tested it for metals.
Hope this is helps!
Dengwei (David) Huo, Ph.D.
GE Nuclear/Global Nuclear Fuel-America
T 910 819-5844
E [log in to unmask]
3901 Castle Hayne Road
P.O. Box 780, M/C H928
Wilmington, NC 28402 USA
From: PLASMACHEM-L: Analytical Chem.(ICP's, DCP's, MIP's).
[mailto:[log in to unmask]] On Behalf Of Pappas, Richard
Sent: Friday, January 22, 2010 8:19 AM
To: [log in to unmask]
Subject: Ball Mills for sample prep
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 Phone
770-488-4661 [log in to unmask]