Jools, If you want any pointers on how to get the benefits of a NIST SRM without the cost, you might want to have a look at: Acta Cryst. (2011). A67, 357-367
Regards, Jim James P. Cline Materials Measurement Science Division National Institute of Standards and Technology 100 Bureau Dr. stop 8520 [ B113 / Bldg 217 ] Gaithersburg, MD 20899-8523 USA jcl...@nist.gov<mailto:jcl...@nist.gov> (301) 975 5793 FAX (301) 975 5334 From: rietveld_l-requ...@ill.fr [mailto:rietveld_l-requ...@ill.fr] On Behalf Of David L. Bish Sent: Monday, October 12, 2015 8:32 AM To: rietveld_l@ill.fr Subject: Re: Quantitative internal standards Hi Jools, In the past we've obtained alumina for use as an internal standard from this company: Metallurgical Supply Co. P.O. Box 12493 Houston, TX 77017 713-645-6631 http://metlabsupply.com/abrasive-powders/high-purity-alumina-powders You can check your material against an NIST standard before use, and evaluate it for purity. Stay away from the very fine particle sizes, as they are not pure alpha-alumina. Best wishes, Dave On 10/8/2015 6:58 PM, Matthew Rowles wrote: Hi Jools As for a source, I can't remember now, but the guys at CSIRO in Melbourne just got a few kilos of a nice alumina. They might respond to this, or I might find the emails first. As for NIST, what I've done in the past is to calibrate my material against the NIST material by the external standard approach. I get most of the benefit of the standard without much of the cost. Matthew On 9 Oct 2015 1:30 am, "Julian Richard Tolchard" <julianrichard.tolch...@sintef.no<mailto:julianrichard.tolch...@sintef.no>> wrote: Hi all, I've been asked to do some quantification on some samples which are predominantly silica, which means a reasonable amorphous component is pretty much inevitable. I'm thus looking for a suitable internal standard for spiking, but as this could be quite a big project moving forwards i don't think the NIST standards are financially viable. Does anyone have any good sources for spikes to use with such light materials? Regards, jools ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Please do NOT attach files to the whole list <alan.he...@neutronoptics.com><mailto:alan.he...@neutronoptics.com> Send commands to <lists...@ill.fr<mailto:lists...@ill.fr>> eg: HELP as the subject with no body text The Rietveld_L list archive is on http://www.mail-archive.com/rietveld_l@ill.fr/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Please do NOT attach files to the whole list <alan.he...@neutronoptics.com><mailto:alan.he...@neutronoptics.com> Send commands to <lists...@ill.fr><mailto:lists...@ill.fr> eg: HELP as the subject with no body text The Rietveld_L list archive is on http://www.mail-archive.com/rietveld_l@ill.fr/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ -- David L. Bish Department of Geological Sciences Indiana University 1001 E. 10th St. Bloomington, IN 47405 812-855-2039
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Please do NOT attach files to the whole list <alan.he...@neutronoptics.com> Send commands to <lists...@ill.fr> eg: HELP as the subject with no body text The Rietveld_L list archive is on http://www.mail-archive.com/rietveld_l@ill.fr/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
