This standard specifies the technical requirements for manual monitoring of ambient air quality and is applicable to environmental monitoring stations and other environmental monitoring agencies at all levels that use manual methods to monitor ambient air quality.
2017HJ 194-2017 Technical specifications on manual methods for ambient air quality monitoring
2005HJ/T 194-2005 Manual methods for ambient air quality monitoring
HJ/T 194-2005 Manual methods for ambient air quality monitoring was changed to HJ 194-2017 Technical specifications on manual methods for ambient air quality monitoring.