NF ISO 27668-1
Gel ink ball pens and refills - Part 1 : general use
ISO 27668-1:2016 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.
ISO 27668-1:2016 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.
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