Gastec รหัสสินค้าNo.137LLหลอดวัดความเข้มข้นของแก๊ส,Detector Tube for Chloroform,Meas.range:0.3～4-5ppm,Quantity:5pcs/Box

Chloroform Detection Tubes (0.3 to 4.5 ppm)Gastec Detection Tube No. 137LL measures Chloroform with a Range of 0.3-4.5 ppm.

• Measuring Range: 0.3 to 4.5 ppm
• Number of Pump Strokes: 4
• Correction Factor: 1
• Sampling Time: 2 minutes per pump stroke
• Detecting Limit: 0.2 ppm (4 pump strokes)
• Changes from White to Pale Purple
• Corrections for temperature & humidity: Temperature correction is necessary
• Relative Standard Deviation: 10% (for 0.3 to 1.5 ppm), 5% (for 1.5 to 4.5 ppm)
• 1 Year Shelf Life (in the refrigerator)
• Reaction Principle:
  • CHCl3 + I2O5 + H2S2O7 → Cl2
  • Cl2 + 3,3'-Dimethylnaphthidine → Reaction product
• Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.
• Comes in a Box of 5 pre tubes and 5 detector tubes

• 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