This memorandum lists the laboratory methods which have been jointly accepted by the customs laboratories of Canada, Mexico, and the United States to achieve inter-laboratory consistency in the analysis of goods for customs purposes. Additional methods will be added to the list as agreement is reached by the laboratories of the three countries.

1. The contact information in paragraph 8, paragraph 9 and Appendix B of this memorandum has been updated.
2. Appendix A has been updated to reflect the new methods that are being used :
   (a) Changes were made concerning the most recent method number and/or date
   (b) The following methods were deleted ISO 3932-1976, ISO 3933-1976, ASTM D1059-1992, ASTM D2101-1995, and ASTM D1233-1993.

This memorandum is available in its entirety on the CBSA website at:
http://www.cbsa.gc.ca/publications/dm-md/d11/d11-12-1-eng.html