Chloroform Detection Tubes (0.5 to 30 ppm)

Chloroform Detection Tubes (0.5 to 30 ppm)

Gastec Detection Tube No. 137LA measures Chloroform with a Range of 0.5-30 ppm.

• Measuring Range:
  
  • 0.5 to 2 ppm
  • 2 to 12 ppm
  • 12 to 30 ppm
• Number of Pump Strokes: 4, 2, 1
• Correction Factor: 0.25, 1, 2.5
• 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 2 to 4 ppm), 5% (for 4 to 12 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

Possible coexisting substances and their interferences: