Description Dräger Tubes are glass vials filled with a chemical reagent that reacts to a specific chemical or family of chemicals. A calibrated 100 ml sample of air is drawn through the tube with the Dräger accuro bellows pump. If the targeted chemical(s) is present the reagent in the tube changes color and the length of the color change typically indicates the measured concentration. Specifications Measures Phosphine 50/a 15-3000 PPM 10 Tubes per box Literature Data Sheet Manual
