Dräger รหัส CH29801 หลอดตรวจวัดความเข้มข้นของก๊าซ,Hydrogen Sulfide 5/b Detector Tubes,measuring range: 5～60 ppm,(10 tests per box)

Short-term tubes and MicroTubes are designed for on-the-spot measurements at a particular location over a relatively short time period. Short-term tube measurements may last from 50 seconds to 15 minutes or so depending on the particular Dräger-Tube and sampling pump. Most measurements take less than 4 minutes. The MicroTubes address low range detection into the ppb levels.