SIST EN ISO 11357-1:2023 PDF

Overview

EN ISO 11357-1:2023 (ISO 11357-1:2023) defines the general principles for using differential scanning calorimetry (DSC) for thermal analysis of plastics and polymers. Part 1 of the ISO 11357 series covers the fundamental concepts, apparatus, sampling, calibration and general procedural and reporting requirements that apply across the series. The standard applies to thermoplastics, thermosets and elastomers (with or without fillers, fibres or reinforcements) and to the observation of transitions, reactions and thermal properties such as glass transition, melting/crystallization, polymerization/crosslinking, oxidative stability and heat capacity.

Key topics and requirements

• Basic principles: Describes heat-flux and power-compensation DSC concepts and general measurement theory.
• Apparatus and materials: Requirements for DSC instrumentation, crucibles and auxiliary equipment.
• Specimen preparation: Guidance on specimen selection, conditioning and mass determination to ensure representative and reproducible results.
• Test conditions and procedure: General rules for scanning and isothermal modes, purge gas, baseline determination and post-run checks.
• Calibration: Mandatory temperature, heat and heat-flow-rate calibrations with recommended calibration materials; Annexes A and B provide extended high‑precision calibration procedures.
• Reporting: Required content for test reports to ensure traceability and comparability of DSC results.
• Normative and informative support: Annex C lists recommended calibration materials; Annex D discusses interactions between calibration materials and crucible types; Annex E gives general recommendations.

Practical applications

EN ISO 11357-1:2023 is the foundational reference for any laboratory or organization using DSC to evaluate polymer materials. Typical applications include:

• Determining glass transition temperature (Tg), melting and crystallization behaviour for material development and quality control.
• Measuring curing and crosslinking reactions of thermosets and elastomers.
• Assessing oxidative or thermo-oxidative stability and thermal aging.
• Determining specific heat capacity for thermal management calculations.
• Establishing validated DSC test methods for regulatory compliance, supplier specifications and R&D comparisons.

Who should use this standard

• Polymer R&D scientists and materials engineers
• Quality control and assurance laboratories in plastics manufacturing
• DSC instrument manufacturers and calibration service providers
• Certification bodies and test laboratories seeking standardized DSC procedures

Related standards

• ISO 11357 series - subsequent parts provide detailed procedures for specific DSC methods and measurements. Consult the ISO catalogue or national standards body for Part numbers and method-specific requirements.

Keywords: EN ISO 11357-1:2023, ISO 11357-1, differential scanning calorimetry, DSC, plastics testing, polymers, glass transition, melting, crystallization, calibration, heat capacity.