Hi Jan Independent Minerals Standards have a corundum certified at 99.04% crystalline. It was done* via external standard calibration by reference to NIST 676a.
https://imstandards.com.au/independent-mineral-standards-releases-ims135/ *I was involved in the XRD measurements that were used in the certification. Matthew On Thu, 15 Aug 2024 at 18:36, Jan Rohlíček <rohli...@fzu.cz> wrote: > Dear All, > > > > SRM 676 (corundum for QPA) at NIST has been out of stock for some time. Is > there an alternative supplier for some similar standard(s)? > > > > Thank you in advance, > > Jan Rohlicek > > > > *Institute of Physics CAS* > > *Cukrovarnicka 10/112162 00 Prague 6* > > *Tel: (+420) 220 318 484* > > *Email: rohli...@fzu.cz <rohli...@fzu.cz>* > > > > > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > 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/ > ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > >
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 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/ ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
