Ten years ago, almost to the day, the National Bureau of Standards reported in Analytical Chemistry (1) the status of its Standard Reference Materials program. In view of the NBS 75th Anniversary of its founding coinciding, as it does, with our Nation's 200th Anniversary, it seems especially fitting that an update of that report be made. In this short 10-year period, more substantive changes have
... [Show full abstract] taken place than occurred over the first 60 years of the program's existence. It is the purpose of this report to recapitulate these events and to attempt to predict what the future holds in store.