Historical
ISO 27668-1:2009
Gel ink ball pens and refills - Part 1: General use
ISO 27668-1:2009 establishes minimum quality requirements for gel ink ball pens (refillable and non-refillable) and refills for general use.
Additional requirements for gel ink ball pens for documentary use are given in ISO 27668‑2.
Content Provider
International Organization for Standardization [iso]