Overview
ISO 12757-2:1998 - Ball point pens and refills - Part 2: Documentary use (DOC) defines minimum quality and performance requirements for ballpoint pens and refills intended for documentary use. Documentary use covers writing required as long‑term evidence (e.g., legal records, certificates, archival documents) where legibility and resistance to alteration are essential. This part supplements the general requirements in ISO 12757-1 and focuses on ink durability and resistance to tampering.
Key topics and technical requirements
The standard specifies test methods and pass/fail criteria for ink performance. Key technical topics include:
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Scope and designation
- Applies to refillable and disposable ballpoint pens and refills intended for documentary (DOC) use.
- Formal designation must include “ISO 12757-2” and the suffix “DOC” (e.g., Ball point pen ISO 12757-2 M DOC).
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Resistance tests (additional to ISO 12757-1)
- Erasure resistance - line must remain visible only after clear paper damage occurs during erasure testing.
- Ethanol resistance - immersion in 50% aqueous ethanol; line must remain visible.
- Hydrochloric acid resistance - immersion in 10% HCl with subsequent rinsing; line must remain visible.
- Ammonium hydroxide resistance - immersion in 10% NH4OH with subsequent rinsing; line must remain visible.
- Bleaching resistance - exposure to 3% chloramin T solution; line must remain visible.
- Water resistance - 24 h immersion in distilled/de‑ionized water; line must remain visible.
- Light resistance - exposure to xenon arc/defined light source until a blue wool reference reaches grey scale grade 4; line must remain visible.
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Testing procedures and equipment
- Sampling, climatic conditions, reproducibility apparatus and detailed procedures refer to ISO 12757-1.
- Test solutions and exposure times are defined (see clauses 5 and 6).
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Marking and test reporting
- Required marking: manufacturer/trademark, ISO designation, date of manufacture or batch number.
- Test report must reference ISO 12757-2, include test conditions, sample IDs, results and tester signature.
Applications and who uses this standard
ISO 12757-2 is used where document longevity and anti‑tampering properties matter:
- Pen and refill manufacturers for product development, quality control and labeling.
- Procurement/specification teams in government, legal and financial institutions when buying pens for official records.
- Archivists and records managers selecting writing instruments for long‑term preservation.
- Forensic document examiners and quality assurance laboratories performing durability and authenticity testing.
Keywords: ISO 12757-2, ball point pens, documentary use, DOC, ink durability, erasure resistance, chemical resistance, archival documents, ballpoint refills.
Related standards
- ISO 12757-1:1998 - Ball point pens and refills - Part 1: General use
- ISO 12756:1998 - Vocabulary for ballpoint and rollerball pens
- ISO 105-A02 / ISO 105-B02 - Test methods referenced for grey scale and lightfastness (blue wool references)
