Method for the Measurement of Sulphur Dioxide in Air
1. Scope
1.1 This Standard applies to the measurement of the concentration of sulphur dioxide in air.
1.2 This Standard sets forth the Pararosaniline Colorimetric Procedure based on the West-Gaeke Method as the reference method for the measurement of sulphur dioxide in the range 25 to 1000 µg·m-3 at 25°C and 101.3 kPa.
Note. All concentrations referred to throughout this Standard…
Applies to the procedures and requirements for the microcopying
of documents on first generation silver halide microfiche with a
sheet size of 105 x 148 mm (ISO A6 size) and containing 98, 49,
60 or 30 frames.