Indicator: 200 to 2500 ppm Measuring Range: + 200 to 2500 ppm, Number of Pump Strokes 1 + 2500 to 5500 ppm, Number of Pump Strokes 1/2 Sampling Time: per pump stroke Colour Change: Reaction Principle: Coefficient of Variation: Nr. of tests: 10 Pump: GV-100S/110S