Proof
ISO/PRF 3135
Marking pens — Durability of written line — Documentary use (DOC)
Reference number
ISO/PRF 3135
Edition 1
2025-04
© ISO 2025
Proof
Under development (Edition 1, 2025)
This draft is in the approval phase.

Abstract

This document establishes minimum quality requirements for durability of written lines by marking pens for documentary use.

General information

  • Status
     : Under development
    Publication date
     : 2025-04
    Stage
    : Proof sent to secretariat or FDIS ballot initiated: 8 weeks [50.20]
  • Edition
     : 1
    Number of pages
     : 6
  • Technical Committee :
    ISO/TC 10
    ICS :
    01.100.40 
  • RSS updates

Life cycle

Sustainable Development Goals

This standard contributes to the following Sustainable Development Goals

4
Quality Education
12
Responsible Consumption and Production

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