Abstract
Porous and finely dispersed certified reference materials (CRM) were certified using the gas adsorption method. The special certification procedure for IUPAC isotherm classification types I, II, and IV is presented for meso- and macroporous materials with special emphasis on specific surface area, specific pore volume and pore width according to standards DIN 66 131, 66 134, and 66 135. Four CRMs (SiO2, α-Al2O3, two transition aluminas) with a macro- and mesopore range are presented. Certification was made on the basis of BCR guidelines in connection with interlaboratory tests (altogether 38 participating laboratories, 44 various gas adsorption apparatus).
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received: 25 April 1997 / Revised: 22 August 1997 / Accepted: 28 August 1997
Rights and permissions
About this article
Cite this article
Röhl-Kuhn, B., Meyer, K., Klobes, P. et al. Development of porous and dispersed CRM. Fresenius J Anal Chem 360, 393–397 (1998). https://doi.org/10.1007/s002160050720
Published:
Issue Date:
DOI: https://doi.org/10.1007/s002160050720