SIST EN ISO 2719:2026

Overview - EN ISO 2719:2025 (Pensky‑Martens closed cup method)

EN ISO 2719:2025, published by CEN and identical to ISO 2719:2025, defines the Pensky‑Martens closed cup method for the determination of flash point of combustible liquids. The standard covers three prescribed procedures (A, B and C) using a Pensky‑Martens closed cup tester for liquids in the temperature range 40 °C to 370 °C. It supersedes EN ISO 2719:2016 and incorporates technical revisions and new normative annexes on apparatus and verification.

Key topics and technical requirements

• Scope and applicability
  • Applicable to distillate fuels (diesel, biodiesel blends, heating oil, turbine fuels), new and in‑use lubricating oils, paints and varnishes, residual fuel oils, mixtures with solids, and FAME (biodiesel).
  • Not intended for water‑borne paints/varnishes (see ISO 3679) or for test methods normally used for kerosene (ISO 13736) and some lubricating oils (ISO 2592).
• Three procedures
  • Procedure A: For homogeneous distillates, lubricating oils, paints and similar liquids.
  • Procedure B: For residual fuels, cutback residuals, used oils, mixtures with solids or fluids that form surface films or have high viscosity.
  • Procedure C: Specifically for fatty acid methyl esters (FAME) as per EN 14214 / ASTM D6751 references.
• Test elements covered
  • Apparatus specification and assembly (including normative diagrams for the Pensky‑Martens cup)
  • Apparatus verification using reference materials (normative Annex A)
  • Temperature measuring device requirements, hot‑wire ignitors and flash point detectors (normative Annexes C and D)
  • Sampling, sample handling, test procedure steps, calculation, pressure corrections, expression of results, precision (repeatability/reproducibility) and test reporting

Practical applications and users

• Used for quality control, product specification and safety classification for shipping, storage and handling of flammable/combustible liquids.
• Common users:
  • Petroleum and biodiesel producers
  • Independent testing laboratories and QC labs
  • Fuel distributors, storage terminals and transport compliance teams
  • Regulatory and standards bodies assessing flammability classification
• Typical uses include detection of volatile contamination, certification of fuel/biodiesel blends, and routine flash point testing for inventory acceptance.

Related standards

• ISO 13736 - kerosene testing (practice)
• ISO 2592 - some lubricating oils
• EN 14214 / ASTM D6751 - FAME (biodiesel) specifications
• ISO 3679, ISO 1523 - tests for water‑borne paints and materials with highly volatile components

Keywords: EN ISO 2719:2025, flash point, Pensky‑Martens closed cup, FAME, biodiesel, diesel, residual fuel oils, test procedure, CEN, petroleum testing.