Description

by Karen Krisher, Ph.D.,

The M22 standard provides information on quality control of commercially prepared microbiological culture media to users and manufacturers. M22-A3 is a revision of the approved standard, M22-A2, published in December 1996. The standard applies to all commercial media listed in Table 2 regardless of packaging, plate, or tube design. The media included in M22-A3 are from three surveys conducted by the College of American Pathologists. The third survey, conducted in the fall of 2001, was performed in response to the many requests for further expansion of the exempt media list. M22-A3 lists an additional 27 exempt media.

ISBN 1-56238-536-4

ISSN 0273-3099