The principle consists in the treatment of a test portion with aniline and acetic acid, the presence of furfural leading to the formation of a characteristic red colour. - International Standards ISO 1388/1 to ISO 1377/12 cancel and replace ISO Recommendation R 1388-1970 of which they constitute a technical revision.
WITHDRAWN
ISO/R 1388:1970
PUBLISHED
ISO 1388-11:1981
90.93
Standard confirmed
Nov 29, 2023