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SIM.QM-S1: Bilateral comparison of NIST and CENAM binary gas mixtures

Frank Guenther1 and Alejandro Perez-Castorena2

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SUPPLEMENTARY COMPARISON

Ten compressed gas cylinders from NIST containing binary mixtures with propane, carbon monoxide, carbon dioxide or nitric oxide, all of them with nitrogen balance, were shipped to CENAM for the purpose of bilateral comparison between CENAM and NIST.

CENAM utilized its own gravimetrically prepared Primary Reference Materials (PRM) to measure the respective concentrations and reported to NIST. The cylinders were shipped back to NIST for verification of their value.

Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/.

The final report has been peer-reviewed and approved for publication by SIM, according to the provisions of the CIPM Mutual Recognition Arrangement (MRA).


Dates

Issue 1A ( 1 January 2009)



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