HEPA Filter Standards Explained: ISO 29463 vs EN 1822
A clear comparison of ISO 29463 and EN 1822 HEPA filter standards, including classification, testing methods, and global applications.
The Role of Filter Media in Efficient Air Filtration Systems
A comprehensive guide to filter media in air filtration systems, covering material types, performance characteristics, and their impact on efficiency, air quality, and system cost.
Why Filtration Efficiency May Decrease at Very Low Airflow: A Mechanism-Based Analysis
While lower airflow can theoretically enhance filtration via diffusion, real-world performance depends on:
Filter media structure
MPPS characteristics
Flow dynamics across the filter
Comparison Between HEPA and ULPA Filters: Key Differences Explained
A clear comparison of HEPA and ULPA filters, covering efficiency, applications, and how to choose the right solution.
Deciphering ISO 16890: Understanding the Standard and the Role of Testing Equipment
A complete guide to ISO 16890, explaining filter classification, PM efficiency, and the importance of testing equipment.
Five Common HEPA Filter Leak Detection Methods
HEPA filter leak detection is essential for ensuring cleanroom performance and compliance with industry standards. This article introduces five common leak detection methods, including sodium flame, oil mist, DOP, fluorescence, and particle counting methods. Among them, the particle counting scanning method has become the most widely used approach due to its high accuracy, real-time detection, and compliance with EN 1822 and ISO 29463 standards. Modern systems such as automatic HEPA filter leak test benches provide reliable and efficient solutions for manufacturers and laboratories.
FILTECH 2026 – The Leading Filtration Exhibition in the World
FILTECH 2026 is one of the most important international events dedicated to filtration and separation technologies.
The exhibition will take place from June 30 to July 2, 2026 in Cologne, bringing together professionals, manufacturers, and researchers from around the world.
Understanding ISO 16890: Test Methods for ePM1 / ePM2.5 / Coarse Efficiency and Equipment Requirements
ISO 16890 brings air filter testing closer to real-world performance expectations. By understanding its classification logic, test procedures, and instrumentation demands, manufacturers can design better filters—and users can better trust the performance labels they rely on.
