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Measuring range: 20-400 ppm
Number of pump strokes: 1(100ml)
Sampling time: 1.5 minutes/ 1 pump stroke
Detectable limit: 1 ppm
Shelf life: 2 years
Operating temperature: 10～40℃
Temperature compensation: Necessary（See "TEMPERATURE CORRECTION TABLE"）
Reading: Direct reading from the scale calibrated by 1 pump strokes
Colour change: Pale yellow→Pale blue
