B-LAB II is a global system, designed to online control the air quality. Especially dedicated for breathing air applications, it guarantees an AIR QUALITY according to European standard EN12021. Thanks to high quality sensors, most of air contaminants could be analyzed. In the standard version, CO, CO2 and O2 are measured. As optional measuring cells, we can add for example oil vapours, air dew point, H2S, etc.