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Quantity of tubes/box: 10
Application: Indoor air pollutants
Gas to be measured: Nitrogen dioxide
Measuring range: 0.01-0.10 ppm/ 0.02-0.20 ppm
Sampling time: 200ml/min x 20 mins/ 200ml/min x 10 mins
Detectable limit: 0.002 ppm（at the sampling of 200mL/min×20min)
Shelf life: 2 year
Operating temperature: 0～40℃
Temperature compensation: Necessary（30～40℃）(See "TEMPERATURE CORRECTION TABLE")
Operating humidity: 5～90%R.H. at 20～40℃/ 20～90%R.H. at 0～20℃
Reading: Direct reading from the scale calibrated at the sampling of 200mL/min ×20min
Colour change: white →Reddish purple
