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China has introduced the new environmental standard HJ 1416-2025 for the determination of odour concentration and emission rate by dynamic olfactometry. It was published on June 6, 2025, and is set to be implemented on January 1, 2026. The document is identified as a "Industry standard - environment" (Standard No. HJ 1416-2025), which is different from a national standard formally published by the Chinese National Standardization Administration (SAC). Although the methodology proposed is dynamic olfactometry, this 10-page standard is a basic text but technically aligned in many aspects with the recent 124-page EN 13725:2022.
HJ 1416-2025 is an environmental industry standard issued by the Ministry of Ecology and Environment. The official full text in Chinese is publicly accessible from the Ministry of Ecology and Environment website and can be downloaded here. This standard establishes updated, scientifically rigorous methods for assessing odour pollution from ambient air and waste gas sources using dynamic dilution olfactometry with trained human assessors, aligning domestic regulatory practices with international advances in odour measurement.
