Nextteq NX204LM Phosphine Detector Tubes, 0.25-20 ppm - 10/Pack

Detector tubes are primarily designed to measure the specific gases their tube names imply. But it is possible to measure other substances of similar chemical properties with the aid of a correction factor or correction chart; these are outlined in the operating instructions and in the Nextteq detector tube handbook for applicable tubes.

• High quality glass tube tip break easily and do not shatter for your safety
• 1 year shelf life
• 0.1 - 2.0 ppm range per 1/2 pump stroke
• 0.5 - 1.0 ppm range for 1 pump stroke
• 0.25 - 5.0 ppm range per 2 pump strokes
• Interferences include ammonia, mercaptans, hydrogen sulfide

Subject to a 30% restocking fee. Items must be returned unopened and in resellable condition.