Објављен
This document specifies a method for determining the swelling properties of hard coal when heated in a covered crucible.
NOTE The "crucible swelling number" (CSN) is also known as the "free swelling index" (FSI).
ПОВУЧЕН
ISO 501:2012
ОБЈАВЉЕН
ISO 501:2025
60.60
Стандард објављен
1. 5. 2025.