Reference number
ISO 20318-2:2019
ISO 20318-2:2019
© ISO 2024
International Standard
ISO 20318-2:2019
Mechanical pencils and leads for general use — Classification, dimensions, quality and test methods — Part 2: Black leads
Edition 1
2019-03
2019-03
ISO 20318-2:2019
67689
Published
(Edition 1, 2019)
This publication was last reviewed and confirmed in 2024.
Therefore this version remains current.
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.