Overview
EN ISO 24197:2022 (ISO 24197:2022) specifies a laboratory gravimetric method for measuring the mass of e-liquid vaporised (EVM) and the aerosol collected mass (ACM) generated by vapour products. The standard defines terms (EVM, ACM, puff block), the principle of measurement, required apparatus and a stepwise procedure for reliable and comparable results. It does not prescribe particular vapour products, operational settings or e-liquid formulations - instead it provides a measurement framework that can be used as a preliminary step for further chemical or toxicological analyses.
Keywords: EN ISO 24197:2022, ISO 24197, vapour products, e-liquid vaporised mass, aerosol collected mass, EVM, ACM, gravimetric method.
Key Topics
- Scope and purpose: Measurement of masses of e-liquid vaporised and aerosol collected from vapour products; intended for routine analytical use and preparatory testing.
- Definitions: Clear definitions of ACM, EVM, puff block, and filter pad overload to ensure consistent terminology.
- Principle: Aerosol generation using a routine analytical vaping machine and gravimetric determination of mass loss (EVM) and mass collected on a glass fibre filter pad (ACM).
- Required apparatus:
- Vaping machine compliant with ISO 20768.
- Analytical balance (precision at least 1 mg; display 0.1 mg).
- Soap-bubble flow meter to verify puff volume.
- Glass fibre filter pads meeting specifications in Annex B.
- Procedure essentials:
- Pre-test checks: leak testing and puff volume verification per the vaping machine and ISO 20768.
- Filter pad handling and conditioning (glove use, equilibration in test atmosphere).
- Use of puff blocks and reporting of environmental and operational parameters.
- Assessment of trapping efficiency and avoidance of filter pad overload (Annex A).
- Data quality: Guidance on repeatability/reproducibility based on interlaboratory studies (2015, 2019).
Applications
EN ISO 24197 is used by:
- Analytical and R&D laboratories performing emissions testing on electronic nicotine delivery systems (ENDS) and other vapour products.
- Product developers and manufacturers for quality control and device optimization.
- Regulatory bodies and conformity assessors requiring standardized measurements of aerosol yields.
- Researchers conducting comparative studies, stability testing, or preparatory sample collection for chemical analyses.
Practical uses include benchmarking device performance, quantifying e-liquid consumption per puff block, and supplying reproducible mass data as input to subsequent chemical or toxicological testing.
Related Standards
- ISO 20768 - Routine analytical vaping machine: definitions and standard conditions (normative reference).
- CORESTA recommended method CRM 84 - basis for method development and interlaboratory validation.
- Developed by ISO/TC 126 in collaboration with CEN/TC 437; published as EN ISO 24197:2022.
For accurate implementation, follow the apparatus and procedural details in the standard and document all test conditions to ensure comparability across studies.
