1.1 This test method describes the phenol-disulfonic acid colorimetric procedure (1)2 for the determination of total oxides of nitrogen [nitrous oxide (N2O) excepted] in gaseous effluents from
ASTM
Standard Test Method for Oxides of Nitrogen in Gaseous Combustion Products (Phenol-Disulfonic Acid Procedures)
STD-35111
1998
2009-03-01
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