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magnetic separation will remove the iron. I suggest you use a jet mill to prevent the contamination rather than try to remove it. ________________________________ From: Support and use of X-ray diffraction instrumentation on behalf of Patrick Weisbecker Sent: Mon 3/30/2009 3:18 AM To: [log in to unmask] Subject: Contamination during Ball milling Hello, We are making powder (carbon graphite sample) for powder diffraction purpose using a Retsch MM200 Miller with Iron or WC balls and we need to get rid of the contamination due to the miller and balls. Do you know some procedures to get rid of this contamination? I thought centrifuging technique could be useful because our sample has a lower density than the miller material. Has someone experienced this technique? Thank you for all ideas or comments... Patrick ---------------------------------------------------------------- Patrick Weisbecker PESSAC ______________________________________________ XRD mailing list [log in to unmask] http://www.jiscmail.ac.uk/lists/xrd.html To leave the list use the webpage or send an email to: [log in to unmask] with the text SIGNOFF XRD ______________________________________________ XRD mailing list [log in to unmask] http://www.jiscmail.ac.uk/lists/xrd.html To leave the list use the webpage or send an email to: [log in to unmask] with the text SIGNOFF XRD