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Measuring range: 10-300ppm/ 4-120ppm
Number of pump strokes: 2(200ml)/ 4(400ml)
Sampling time: 3 minutes/ 2 pump strokes
Detectable limit: 3ppm (200ml)
Shelf life: 2 years
Operating temperature: 10～40℃
Temperature compensation: Necessary（See "TEMPERATURE CORRECTION TABLE"）
Reading: Direct reading from the scale calibrated by 2 pump strokes
Colour change: yellow→ pale blue
