International Standard
ISO 20318-2:2019
Mechanical pencils and leads for general use — Classification, dimensions, quality and test methods — Part 2: Black leads
Reference number
ISO 20318-2:2019
ISO 20318-2:2019
Edition 1
2019-03
2019-03
© ISO 2024
International Standard
Abstract
This document specifies classification, dimensions, quality and test methods for black leads used for mechanical pencils for general writing, as specified in ISO 20318-1.
Life cycle
Got a question?
Check out our FAQs
Customer care
+41 22 749 08 88
Opening hours:
Monday to Friday - 09:00-12:00, 14:00-17:00 (UTC+1)