Gastecª Glass Formaldehyde Low Range Detector Tube (For Use With Gastecª Gas Detection System) (10 Per Box)

Gastecª Formaldehyde Detector Tube features 5 pump strokes and 1 correction factor for 0.1 - 5 ppm measuring range and 1 pump strokes and 8 correction factor for 5 - 40 ppm measuring range. Detector tube with sampling time of 1.5 min per pump stroke is ideal to detect formaldehyde in air or the industrial areas and environmental atmospheric condition. Detector with 0.05 ppm detecting limit, changes color from yellow to reddish brown.