ISO 8761:1989/Cor 1:2009

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ISO 8761:1989/Cor 1:2009 is a technical corrigendum (an amendment) to the ISO 8761:1989 standard. It focuses on workplace air and specifies a method using detector tubes for short-term sampling with direct indication to determine the mass concentration of nitrogen dioxide. The "Cor 1:2009" part signifies that this is the first corrigendum (or amendment) to the original standard published in 1989, with the correction being applied in 200