ISO 29464:2017

Overview

ISO 29464:2017 - Cleaning of air and other gases - Terminology - provides a unified vocabulary for the air filtration and air-cleaning industry. This second-edition ISO document contains terms and definitions only, covering particulate and gas‑phase air filters, general‑ventilation air cleaners, air inlet filters for static and seaborne rotary machines, and UV‑C germicidal devices. It excludes road‑vehicle cabin filters, inlet filters for mobile internal combustion engines, and dust separators used solely for air‑pollution control.

Key Topics and Technical Scope

ISO 29464:2017 standardizes essential air filtration terminology used across testing, specification, design and procurement. Major content areas include:

• General terms applicable to both particulate and gas‑phase cleaners (e.g., air cleaner, filter, contaminant, face velocity, flow rate, penetration, efficiency, decontamination factor).
• Particulate filter vocabulary, including aerosols, monodisperse/polydisperse aerosols, arrestance, dust‑holding capacity, cleanable filter degradation, HEPA and ULPA related terms.
• Air intake particulate filters for static and seaborne rotary machines.
• Cleanable particulate filter degradation - terminology describing clogging, cleaning and burst pressure.
• Gas phase air cleaners (GPAC) definitions for adsorbents, gas purifiers and related concepts.
• UVC device terms for germicidal irradiation systems.
• Clarifying measurement units and test‑related vocabulary (e.g., test flow rate, nominal flow rate, resistance to air flow in Pa).

Note: ISO 29464:2017 is terminology‑only and contains no normative test procedures; it complements ISO test standards (for example, procedures referenced in ISO 16890 and the ISO 29461 series).

Practical Applications - Who Uses ISO 29464:2017

ISO 29464:2017 is essential for professionals who need consistent, international terminology in air filtration and indoor air quality (IAQ):

• Filter and air‑cleaner manufacturers for product specifications and labeling
• HVAC designers and mechanical engineers for system design and performance documentation
• Test laboratories and calibration facilities to harmonize test reports and measurement language
• Procurement teams and facility managers for clear tenders and contract wording
• Regulators, certification bodies and standards writers to ensure consistent interpretation of requirements
• Researchers and consultants working on airborne particulate, bioaerosols and gas‑phase removal

Related Standards and Resources

• ISO/TC 142 (Cleaning equipment for air and other gases) responsible for this document.
• ISO Online Browsing Platform and IEC Electropedia for related terminologies.
• Complementary standards such as ISO 16890 (particulate filter testing/assessment) and the ISO 29461 series (test procedures) for performance measurement.

Keywords: ISO 29464:2017, air filtration terminology, air filter terminology, HEPA, ULPA, gas phase air cleaner, UV‑C germicidal device, HVAC filters, filter efficiency, face velocity.