REFERENCE MATERIALS

 World Federation for Culture Collections (WFCC) 

 Databases by Culture Collections (WDCM)

 International Database for Certified Reference Materials (COMAR-BAM) 

 Virtual Institute for Reference Materials (VIRM)

 Food Analisys Performance Assessment Scheme (FAPAS) 

 National Institute of Standard and Technology (NIST) 

 Laboratory of the Government Chemist (LGC)