Home / Standards / GB/T 45796-2025 GB/T 45796-2025 Active Method for air negative ion concentration observation—Capacitance inhalation 空气负离子观测方法 电容式吸入法 Standard Type GBT ICS 07.060 CCS A47 Status 现行 Issue Date 2025-05-30 Implementation 2025-12-01 Responsible Dept 中国气象局 Drafting Unit N/A