Operating without pump, Aura™ handles variations in face velocity, temperature, and humidity, overcoming limitations of sorbent tubes and badges. Passive sampling device allows multiple analyses of >100 VOCs, providing broader application utility than analyte-specific sorbent techniques. Comfortable to wear, Aura is sensitive down to pptv levels and there is no risk of breakthrough even at ppmv levels. Quick connection starts and stops flow with no calibration required.