UNE-EN ISO 29463-5-2019 PDF

Full title and description

STB UNE-EN ISO 29463-5-2019 — High-efficiency filters and filter media for removing particles from air — Part 5: Determination of particle size-dependent penetration, efficiency and pressure drop — Scan method

Abstract

This standard specifies a scan method for determining particle size‑dependent penetration, collection efficiency and pressure drop of high‑efficiency air filters (HEPA and ULPA) and filter media. It describes test conditions, aerosol generation and characterization, measurement procedures using scanning particle counters or sizers, calibration requirements and evaluation of results to classify filter performance across a defined particle size range.

General information

• Status: Published, in force (adopted national version of EN ISO 29463-5:2019)
• Publication date: 2019
• Publisher: STB (adoption of UNE-EN ISO standard) / ISO and CEN origin
• ICS / categories: 13.040.20 (Air filters), 13.020 (Air quality), 91.060 (Air conditioning engineering)
• Edition / version: 2019 version (part 5 of ISO 29463 series)
• Number of pages: Typically 12–24 pages (varies by national publication); original EN ISO 29463-5 comprises around 18 pages

Scope

This part of ISO 29463 defines a scan test method for determining particle size‑dependent penetration and collection efficiency of flat sheet filter media and full filter units intended for high‑efficiency particulate air filtration. It covers requirements for test aerosols, conditioning, test rigs, measurement instruments (aerosol spectrometers / particle counters), data acquisition and reporting. The method is suitable for classification and quality control of HEPA and ULPA filters across a defined particle size range including the most penetrating particle size (MPPS).

Key topics and requirements

• Definition and scope of the scan method for size‑dependent penetration and efficiency measurement
• Requirements for aerosol generation (type, stability, concentration) and neutralization
• Use of scanning particle counting/sizing instruments to measure upstream and downstream particle size distributions
• Test rig configuration and sample mounting, including leak testing and flow control
• Determination and reporting of pressure drop across the filter during tests
• Calculation of efficiency and penetration as functions of particle size, and identification of MPPS
• Calibration and performance verification of measurement instruments and uncertainty considerations
• Data evaluation, test repeatability and reporting requirements for traceability

Typical use and users

Used by filter manufacturers, testing laboratories, quality assurance personnel, specifiers of cleanrooms and controlled environments, HVAC engineers and certification bodies to assess and document the performance of HEPA/ULPA filters and media. It supports product development, production control, acceptance testing and regulatory or cleanroom compliance.

Related standards

Part of the ISO 29463 series for high‑efficiency filters; related documents include ISO 29463-1 (classification, performance, testing and marking), ISO 29463-2 (measuring fractional efficiency), ISO 29463-3 (scan method for full filters), ISO 29463-4 (test procedure for filter media), as well as national/adopted EN and UNE versions of these parts. Other related standards: EN 1822 series (classification and testing of high efficiency air filters) and ISO 16890 (air filter testing for general ventilation) for broader ventilation filter testing.

Keywords

HEPA, ULPA, high-efficiency filter, filter media, scan method, penetration, collection efficiency, particle size distribution, MPPS, aerosol generation, pressure drop, particle counter, filter testing

FAQ

Q: What is this standard?

A: It is the 2019 part 5 of the ISO 29463 series, an adopted national version (STB UNE-EN ISO 29463-5-2019) that specifies a scan method to measure particle size‑dependent penetration, efficiency and pressure drop of high‑efficiency filters and media.

Q: What does it cover?

A: It covers test arrangements, aerosol generation and characterization, measurement using scanning particle counters or spectrometers, calibration, calculation of efficiency and penetration across particle sizes, pressure drop measurement and reporting requirements.

Q: Who typically uses it?

A: Filter manufacturers, independent test laboratories, cleanroom and HVAC engineers, quality managers and certification bodies who need reliable size‑resolved performance data for HEPA and ULPA filters and media.

Q: Is it current or superseded?

A: As published in 2019, this part is current unless a newer revision has been issued by ISO/CEN or adopted nationally; users should check national standards bodies for any later amendments or supersessions.

Q: Is it part of a series?

A: Yes. ISO 29463 is a multi‑part standard on high‑efficiency filters and filter media; part 5 is the scan method. Other parts address classification, other test methods and specific procedures for media and full filters.

Q: What are the key keywords?

A: HEPA, ULPA, scan method, penetration, efficiency, MPPS, aerosol, particle counter, pressure drop