This monitor measures the concentration of carbon monoxide in an individual's breath, at a rate of PDD-301/sco and PDD-301/rco. An inevitable part of the smoking cessation program, this particular device can detect ranges of between 0 - 100 ppm CO concentration. It features a spirometer and rhinomanometer. Calibration is automatic as is the zero setting. More accuracy and quicker responses are provided due to the side stream gas analysis. During Co analysis, full flow and volume monitoring are in effect. According to the European Respiratory Journal, the flow meter and spirometer of the PinkFlow system meet all requirements proposed by the Standardization of Lung Function Testing ATS/ERS Task force.