Does NIST have more finfish and shellfish reference materials certified for trace elements?
The National Metrology Laboratory of Canada (NRC Canada) has a greater number of finfish and shellfish CRMs that are certified for inorganics and organics. They can be contacted at the weblink provided below. http://inms-ienm.nrc-cnrc.gc.ca/calserv/crm_e.html A complete listing of the international National Metrology Laboratories can be found at the link provided below.