IRAM OFICIAL 3025-N.I.O.-1956
Written with blue and black ink. persistent retention

Standard No.

IRAM OFICIAL 3025-N.I.O.-1956

Release Date

1956

Published By

AR-IRAM

Scope

Bl This standard establishes the characteristics and testing methods of evergreen blue-black writing ink, intended to be used in writings that must be preserved for a long time.