Measuring range ：3-24％; 1.5-3％
Number of pump strokes 1/2(50ml); 1(100ml）
Sampling time ：1 minute/1/2 pump strokes; 1.5 minutes/1 pump stroke
Shelf life：2 years
Operating temperature：0～45℃
Reading： Direct reading from the scale calibrated by 1/2 pump stroke
Colour change： Black→White
