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Measuring range: 3-150ppm/ 1-50ppm/ 0.75-37.5ppm/ 6-300ppm
Number of pump strokes: 1(100ml)/ 3(300ml)/ 4(400ml)/ 1/2(50ml）
Sampling time: 1 minute /1 pump stroke
Detectable limit: 0.3 ppm（300ml）
Shelf life: 3 years
Operating temperature: 0～40℃
Reading: Direct reading from the scale calibrated by 1 pump stroke
Colour change: White→Dark brown
