Commercial approaches to the certification of reference materials for environmental analysis

Peter J. Jenks,^a* Robert D. Rucinski^b and Henryka Jerzak^c

^a“the Jenks’ Partnership”, Newhaven House,Alderbury, SP5 3AZ,UK
^bRT Corporation, PO Box 1346, Laramie,Wyoming, USA
^cInstytut Przemyslu Organicznego (IPO), ul.Annopol 6, PL-03 236 Warsaw, Poland