Measuring range: 50-1000 ppm
Number of pump strokes: 1(100ml）
Sampling time: 3 minutes/1 pump stroke
Detectable limit: 10 ppm
Shelf life: 3 years
Operating temperature: 0～40℃
Reading: Direct reading from the scale calibrated by 1 pump stroke
Colour change: Pale yellow→Brownish blue
