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ISO 7996:1985
M00001784
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ISO 7996:1985 Ambient air - Determination of the mass concentration of nitrogen oxides - Chemiluminescence method
standard by International Organization for Standardization, 12/01/1985
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The procedure is applicable to mass concentration of nitrogen monoxide present up to approximately 12,5 mg/m3 of nitrogen dioxide up to approximately 19 mg/m3 at 25 C and 101,3 kPa.