SIST EN ISO 11127-1:2021 PDF

Overview - EN ISO 11127-1:2021 (ISO 11127-1)

EN ISO 11127-1:2021 specifies a standardized method for sampling non‑metallic blast‑cleaning abrasives used in surface preparation of steel prior to painting. It defines how to take representative single samples from consignments, prepare a mixed sample, reduce it to a test sample and identify/store samples so they are suitable for the test methods given in ISO 11127-2 to ISO 11127-7. This part is published by CEN as the European adoption of ISO 11127-1:2020 and is part of a coherent set with the ISO 11126 series (types and requirements for non‑metallic abrasives).

Key topics and technical requirements

• Sampling frequency by consignment size
  • < 50 tonnes: 5 single samples
  • 50 to 100 tonnes: 10 single samples

  • 100 tonnes: 15 single samples

• Sampling equipment
  • Sample thief (seamless steel tube ~25 mm internal diameter, ~800 mm length) with holes along the tube spaced at 50 mm; hole diameter ≈ 3× largest particle (≈10 mm commonly used).
  • Sample divider / riffler or equivalent for mechanical subdivision.
• Sample preparation procedure
  • Combine single samples into a mixed sample and homogenize.
  • Reduce sample size by mechanical or manual subdivision (riffle divider recommended), discarding alternate reduced portions until a suitably sized test sample remains.
• Test sample handling
  • Store test samples in sealed containers until testing. Remix the retained test sample before taking portions; do not remix used portions back into the remaining sample.
• Sample identification and traceability
  • Include product identification (per ISO 11126 where applicable), consignment details (supplier, order number, despatch/receipt dates) and any product traceability references.
• Guidance for stockpiles/transport units
  • Annex A gives practical advice to minimise segregation bias when sampling piles, trucks, rail cars or barges.

Applications and who uses it

• Quality control laboratories performing acceptance testing of non‑metallic blast‑cleaning abrasives.
• Surface preparation and blasting contractors ensuring incoming abrasive consignments are representative for testing.
• Paint and coatings manufacturers, procurement teams and specification writers needing verified abrasive properties for coating system performance.
• Inspectors and project QA personnel responsible for traceability and conformance before coating application.

Related standards

• ISO 11127 series (Parts 2–7) - test methods applied to samples obtained under ISO 11127-1.
• ISO 11126 series - types and requirements for non‑metallic blast‑cleaning abrasives. (See Annex B of EN ISO 11127-1:2021 for a complete list of related parts.)

Keywords: EN ISO 11127-1:2021, ISO 11127-1, sampling, non‑metallic blast‑cleaning abrasives, surface preparation, test methods, sample thief, riffle divider, ISO 11126.