Preserve in tight containers.
The United States Pharmacopeia (USP) 39, combined with the National Formulary (NF) 34, represents a critical milestone in the history of global pharmaceutical standards. While the pharmaceutical industry has since moved toward more recent editions, many professionals still search for the to reference specific legacy monographs, historical testing methods, or regulatory compliance data from that era. What is the USP 39-NF 34?
For professionals, the annual subscription (starting at ~$1,500/year) gives access to current and historical editions, plus supplements. It is searchable and includes change tracking.