95.99 Withdrawal of Standard Aug 9, 2017
ISO
ISO/TC 27/SC 5 Methods of analysis
International Standard
73.040 Coals
This part of ISO 7404 applies only to determinations made on polished particular blocks using reflected white ligth. The examination is carried out by using reflected ligth microscope and point count procedure. The microlithotypes are identified from their maceral composition under an immersion medium. The proportions of the macerals are determined using a graticule having a grid with 20 points of intersection.
WITHDRAWN
ISO 7404-4:1988
95.99
Withdrawal of Standard
Aug 9, 2017