Target chemical: Sulphide ion
Sampling method: Immersion method
Measuring range: 2-1,000 ppm
Sampling time: 3 minutes
Sample volume: Over 5 ml
Detectable limit: 1 ppm
Shelf life: 1 year
Operating temperature: 5～60℃
Operating PH: 1-12
Reading: Direct reading from the scale
Colour change: White→Brown
