SN/T 2558.2-2011
Testing method for import and export functional textiles-Part 2:Negative ion concentration
HG/T 4109-2009
GB/T 30128-2013
Textiles—Testing and evaluation for negative-ion concentration
JC/T 2040-2022
QX/T 419-2018
Specifications for air negative ions observation-Capacitance inhalation
QB/T 4982-2023
QB/T 4982-2016
Negative ion generator for household and similar electrical appliances
LY/T 3235-2020
General requirements for negative air ion inducing wood-based panels and their finishing products
QX/T 475-2019
Technical requirements for air negative ions automatic measurement instrument-Capacitance inhalation
T/CNCIA 01030-2023
T/ZZB 1089-2019
GB/T 37385-2019
Test method for chloride content of silicon—Ion chromatography method
T/QGCML 018-2020
T/CNLIC 0130-2024
T/JAMIA 002-2024
GB/T 42276-2022
Determination of fluorine ion and chloride ion in silicon nitride powder—Ion chromatography method
T/CBMCA 004-2018
T/HBTL 019-2023
20192358-T-416
Method for air negative ion concentration observation — capacitance inhalation
JC/T 1016-2006
Testing on negative in concentration of materials