EN ISO 3405:2019 PDF

Overview

EN ISO 3405:2019 (ISO 3405:2019) defines a laboratory method for determining the distillation characteristics at atmospheric pressure of petroleum and related products from natural, synthetic or biological sources. It applies to samples with initial boiling points above 0 °C and end-points below approximately 400 °C, using either manual or automated apparatus. Typical materials covered include light distillates (automotive petrol, petrol–ethanol blends up to 85 % V/V, aviation petrol) and middle distillates (aviation turbine fuel, kerosene, diesel including diesel with up to 30 % V/V FAME, burner and certain marine fuels).

Key Topics

• Scope and sample types: Light and middle distillates derived from petroleum, synthetic and bio-based sources; volume-fraction notation (% (V/V)) for blends.
• Principle: Determination of boiling range and volatility (distillation curve) at atmospheric pressure to assess composition and evaporation behavior.
• Apparatus & equipment: Specifications for distillation flasks, condenser and cooling bath, heat sources, flask support, graduated cylinders, temperature-measurement systems, centring devices and barometers.
• Procedure options: Detailed procedures for manual apparatus and for automated apparatus.
• Sample handling: Grouping, maintenance, and procedures for removing water where applicable.
• Verification & calibration: Level followers, temperature-sensor lag-time determination, electronic temperature and pressure device checks; thermometer specifications are provided (Annex A/B).
• Data treatment: Calculations, expression of results, examples of data calculation and test-report templates (informative annexes).
• Precision & bias: Repeatability, reproducibility and bias information for manual and automated methods.

Applications

• Fuel quality control: Producers and refiners use EN ISO 3405:2019 to verify boiling ranges for petrol, diesel and aviation fuels to meet product specifications.
• Regulatory compliance: Authorities and testing labs apply the standard to control end-use performance, vapor pressure limits, and VOC/emissions considerations.
• Blending & R&D: Technical teams evaluating ethanol or FAME blends assess volatility and distillation behavior during formulation and stability testing.
• Safety & performance assessment: Operators and safety engineers use distillation data to evaluate fire/explosion risks and evaporation rates for storage and handling.
• Laboratory accreditation: Test houses and national labs adopt the standard for standardized, reproducible atmospheric distillation testing.

Related Standards

• ISO 3405:2019 aligns procedure elements with established methods such as ASTM D86 (as noted in the ISO foreword). It is published under CEN as EN ISO 3405:2019 and supersedes EN ISO 3405:2011.

Keywords: EN ISO 3405:2019, ISO 3405:2019, distillation characteristics, petroleum distillation, atmospheric pressure, light distillates, middle distillates, petrol–ethanol blends, diesel FAME, laboratory method.