NOTICE OF POSTPONEMENT

Helium, Nitrous Oxide, Nitrogen, and Nitrogen 97 Percent Monographs


January 18, 2006

USP has postponed indefinitely the official dates of the revisions to the Helium, Nitrous Oxide, Nitrogen, and Nitrogen 97 Percent monographs, which were published in the First Supplement to USP 28–NF 23 on pages 3245, 3264, 3359, and 3359, respectively. These revisions were originally slated to become official on April 1, 2005. The postponements are to provide additional time to further evaluate some of the tests, procedures, and acceptance criteria provided in the proposed revisions.

The Aerosols Expert Committee is presently reviewing comments received concerning these revisions. The USP intends to publish, if necessary, additional proposed revisions in a future issue of Pharmacopeial Forum for further public review and comment. USP proposes that these monograph revisions go forward to official text once the public comments have been considered.

Should you have any questions, please contact Kahkashan Zaidi, Ph.D., Scientist, General Policies and Requirements Division and liaison to the Aerosols Expert Committee (301-816-8269 or ).