Category ISO Standards

Standard scan test method for detecting leaks in HEPA and ULPA filter elements 1. Scope of ISO 29463-4: Leak Detection by Scanning ISO 29463-4:2011 specifies the scan test method for determining leakage of high-efficiency filter elements. This is arguably the…

Comprehensive guide to MPPS-based efficiency testing for HEPA and ULPA filters Introduction to ISO 29463-5 and the MPPS Concept ISO 29463-5:2022 specifies the reference test method for determining the efficiency of high-efficiency particulate air (HEPA) and ultra-low penetration air (ULPA)…

Standard test methods for static filter systems in coastal and offshore environments for rotary machinery 1. Scope of ISO 29461-4: Coastal and Offshore Filter Testing ISO 29461-4:2025 specifies test methods for static filter systems used in air intake systems for…

In situ removal efficiency and airflow resistance testing for general ventilation filtration systems 1. Introduction to ISO 29462: Field Testing of Ventilation Filters ISO 29462:2022 specifies methods for field testing of general ventilation filtration devices and systems to determine in…

Comprehensive standard for HEPA and ULPA filter classification, testing, and marking based on MPPS methodology 1. ISO 29463-1: Classification and Performance Requirements for HEPA/ULPA Filters ISO 29463-1:2024, the third edition of the foundational part of the ISO 29463 series, specifies…

Essential specifications for aerosol generation and particle counting in high-efficiency filter testing 1. Scope of ISO 29463-2: Aerosol Production and Measurement Equipment ISO 29463-2:2011 provides the essential specifications for aerosol production, measuring equipment, and particle-counting statistics used in testing high-efficiency…

Standard method for total nitrogen analysis in water using CFA and FIA with inline UV digestion and spectrometric detection 1. Principle and Scope of ISO 29441 ISO 29441:2010 specifies a method for the determination of total nitrogen in various water…

Test methods for static filter elements in air intake systems for gas turbines and compressors 1. Introduction to ISO 29461-1 and Air Intake Filtration for Rotary Machinery ISO 29461-1:2021 specifies test methods for static filter elements used in air intake…

Standard test method for evaluating filter element endurance in fog and mist environments for rotary machinery 1. Scope of ISO 29461-2: Fog and Mist Endurance Testing ISO 29461-2:2022 specifies the test method for evaluating the endurance of filter elements used…

Test methods for evaluating the mechanical integrity of filter elements in rotary machinery air intake systems 1. Introduction to ISO 29461-3: Mechanical Integrity Testing ISO 29461-3:2024 specifies test methods for evaluating the mechanical integrity of filter elements used in air…