scope:

This Standard specifies the methods to determine nitrogen oxides contained in flue gas.

The flue gasses stated in this Standard are defined as the gases which are exhausted into a flue, chimney, duct, etc. from such processes as fuel combustion, metal surface treatment, inorganic and organic chemical reaction and denitration process.

NOTE: The International Standard corresponding to this Standard and the symbol of degree of correspondence are as follows.

ISO 11564:1998 Stationary source emissions-Determination of the mass concentration of nitrogen oxides-Naphthylethylenediamine photometric method (MOD)

In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standard and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/IEC Guide 21-1.