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Measuring range: 2-100 ppm
Number of pump strokes: 3(300ml）
Sampling time: 4.5 minutes/3 pump strokes
Detectable limit: 1 ppm
Shelf life: 2 years
Operating temperature: 0～40℃
Temperature compensation: Necessary（See "TEMPERATURE CORRECTION TABLE"）
Reading: Direct reading from the scale calibrated by 3 pump strokes
Colour change: Yellow→Pale blue
