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Type of harmful chemicals: Benzene
Measuring range: 4-100 ppm/ 2-50ppm/ 1-25ppm
Number of pump strokes: 1(100ml)/ 2(200ml)/ 4(400ml)
Sampling time: 4 minutes/2 pump stroke
Detectable limit: 0.2ppm (400ml)
Shelf life: 2 years
Operating temperature: 0～40℃
Temperature compensation: Necessary (See “TEMPERATURE CORRECTION TABLE”)
Reading: Direct reading from the scale calibrated by 2 pump stroke
Colour change: white → greenish brown
