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Target chemical: Sulphide ion
Sampling method: Immersion method
Measuring range: 0.5-10ppm
Sampling time: 2.5 minutes
Sample volume: Over 5 ml
Detectable limit: 0.1 ppm
Shelf life: 2 years
Operating temperature: 5～40℃
Operating PH: 7-14
Reading: Direct reading from the scale
Colour change: white → pale brown
