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Measuring range: 1-50 ppm
Number of pump strokes: 1(100ml)
Sampling time: 4 minutes
Detectable limit: 0.5ppm
Shelf life: 2 years
Operating temperature: 5～40℃
Temperature compensation: necessary (see "TEMPERATURE CORRECTION TABLE")
Reading: Direct reading from the scale calibrated by 1 pump stroke
Colour change: Orange→Reddish purple
