The International Standard for sisomicin.

An International Standard for Sisomicin has been established on the basis of a collaborative assay. There were seven participating laboratories in seven countries. The activity of the contents of each ampoule of the International Standard of Sisomicin is defined as 35,200 International Units of Sisomicin.

The International Standard for Amikacin.

An International Standard for Amikacin has been established on the basis of a collaborative assay. Seven laboratories, in seven countries, took part. Each ampoule of the International Standard of Amikacin is defined as containing the activity of 50 600 International Units of Amikacin.