(3)Reference Material: ERM®-BF412 (for SYN-BTØ11-1), ERM®-BF446 (for SYN-IR162-4) and ERM®-BF423 (for SYN-IR6Ø4-5) accessible via the Joint Research Centre (JRC) of the European Commission, at https://crm.jrc.ec.europa.eu/ and AOCS 0407-A and AOCS 0407-B (for MON-ØØØ21-9) accessible via the American Oil Chemists Society at https://www.aocs.org/crm.