We are using Baikowski CR1
https://www.baikowski.com/en/serie/cr/
Not certified but maybe identical with SRM676a. Scale factors and cell parameters found to be within the errors. Profile shape shows similar features (also not an ideal material).
Best regards
Reinhard


Zitat von Matthew Rowles <rowle...@gmail.com>:

Hi Matej

You can try IMS135 - high purity alumina.

https://imstandards.com.au/products/

It was certified against some SRM676a we already had in the lab.


Matthew




On Sun, 12 Nov 2023 at 22:42, Matej Dolenec <smu...@siol.net> wrote:

Dear all,

I am trying to buy NIST-676a but unfortunately unsuccessful ... I was
trying to find it on NIST, ALDRICH and other sites but the standard is
out of stock. Does anybody has any information if this standard will be
available soon and where? If not, which standard should I use instead of
NIST-676a? I was using this standard for amorphous phase identification.

Regrads, Matej

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