Test methods for assessing the performance of gas-phase air cleaning media and devices for general ventilation - Part 3: Classification system for GPACDs applied to treatment of outdoor air (ISO 10121-3:2022)

This technical specification outlines the framework for classifying outdoor air purification devices that operate on a gas phase, specifically designed to assess their performance in reducing gaseous pollutants. It details the methodologies required to evaluate the operational characteristics of ventilation materials and equipment used in external environments. The document establishes criteria for categorizing these systems based on their efficacy in removing targeted chemical constituents from the atmosphere. By defining specific test procedures, it ensures a consistent approach to measuring the capabilities of such units. The content focuses on the structural and functional aspects of the evaluation process, providing a standardized reference for manufacturers and testing laboratories. It addresses the technical parameters necessary to determine how effectively a device can process air in open settings, ensuring uniformity in performance reporting. This approach facilitates comparison across different models and technologies within the field of outdoor environmental control systems.