Gastec รหัสสินค้า No.139 หลอดวัดความเข้มข้นของแก๊ส,Detector Tube For 1,2-Dichloroethylene,Meas.range:5～250ppm,(10pcs/Box)

1.2-Dichloroethylene Detection Tubes (5 to 250 ppm)Gastec Detection Tube No. 139 measures 1,2-Dichloroethylene with a Range of 5 to 250 ppm.

• Measuring Range:
  • 5 to 10 ppm
  • 10 to 100 ppm
  • 100 to 250 ppm
• Number of Pump Strokes: 2, 1, 1/2
• Correction Factor: 1/2, 1, 2.5
• Sampling Time: 45 seconds per pump stroke
• Detecting Limig 1 ppm (2 pump strokes)
• Changes from Yellow to Reddish Purple
• Corrections for temperature & humidity: Temperature correction is necessary
• Relative Standard Deviation: 10% (for 10 to 20 ppm), 5% (for 20 to 100 ppm)
• 2 year Shelf Life (in the refrigerator)
• Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.
• Reaction Principle:
  • ClCH:CHCl + PbO2 + H2SO4 → HCl
  • HCl + Base → Chloride

• On-site measurements can be performed easily by anybody, anytime and anywhere, in a short time
• Easy-to-check direct reading possible due to calibrated scale directly printed on the tube
• An extensive measuring range can be obtained by adjusting the sampling volume
• In order to assure high precision, each production lot is tested and calibrated independently, Each detector tube has its own quality control number printed on the tube
• Long shelf-life with excellent long-term stability