ISO 16890-1:2016

Overview

ISO 16890-1:2016 is an international standard developed by ISO that establishes the technical specifications, requirements, and efficiency classification system for air filters used in general ventilation. The unique focus of this standard is on the filter's ability to remove particulate matter (PM) from the air, setting a unified benchmark for evaluating and classifying air filter elements. It also introduces clear documentation and marking requirements, as well as an overview of the necessary test procedures for assessing filter performance. As part of the ISO 16890 series, this standard is used in combination with Parts 2, 3, and 4 for complete filter evaluation.

Key Topics

• Particulate Matter Based Filter Classification: The standard introduces a performance classification system based on particulate matter efficiency (ePM), specifically targeting PM1, PM2.5, and PM10 particle sizes. Air filters are classified as ISO Coarse, ISO ePM10, ISO ePM2.5, or ISO ePM1 depending on their ability to remove particles of different sizes.

• Test Methods: ISO 16890-1 specifies general testing steps, including measuring resistance to airflow, initial and conditioned fractional efficiency curves, and (optionally) dust loading capacity with standard test dust. These tests are conducted at defined airflow rates using standard test rigs.

• Efficiency Reporting: Filters are assigned to a group and further classified by efficiency levels rounded down to the nearest 5% (e.g., ISO ePM1 80%). The standard also requires proper documentation and labeling for transparency in product performance.

• Performance Limitations: While laboratory results provide standardized data for comparison, they cannot be used as direct predictors of in-service efficiency or lifetime due to real-world variables such as installation quality, environmental conditions, and maintenance.

Applications

Building and Facility HVAC Systems

• Commercial and Public Buildings: The standard applies to air filter elements in systems for offices, schools, hospitals, and shopping centers, where indoor air quality is closely linked to occupant health and comfort.
• Industrial Facilities: Factories and production sites use filters classified under ISO 16890-1 to control airborne dust and other fine particles, protecting equipment and processes.

Filter Selection and Product Development

• Manufacturers: Air filter manufacturers rely on this standard to design, test, and market filters that meet global requirements, facilitating international trade by providing a harmonized classification system.
• System Designers and Engineers: Professionals use ISO 16890-1 to select appropriate filters for HVAC system designs, ensuring the best fit for regional air quality requirements and specific environmental needs.

Regulatory and Procurement Compliance

• Specification and Procurement: Facility managers and procurement officers use ISO 16890-1’s classification system to objectively compare filter products, support preventive maintenance planning, and ensure compliance with health and safety regulations.

Related Standards

ISO 16890-1 is intended for use with the following standards for complete air filter testing and classification:

• ISO 16890-2: Covers measurement of fractional efficiency and airflow resistance.
• ISO 16890-3: Describes the determination of gravimetric efficiency and resistance versus mass of test dust captured.
• ISO 16890-4: Details the conditioning method to determine minimum fractional test efficiency.

For air filters with ePM1 initial efficiency above 99%, refer to:

• ISO 29463 series: Separate standards for high-efficiency particulate air (HEPA) and ultra-low penetration air (ULPA) filters.

Filters used in portable room-air cleaners are outside the scope of ISO 16890-1.

Using ISO 16890-1:2016 for air filter classification ensures clear communication of product capabilities, supports better indoor air quality management, and enables effective filter selection in HVAC and general ventilation applications worldwide.