Gastec รหัส No.4Lหลอดวัดความเข้มข้นของแก๊ส,Detector tube for Hydrogen sulphide(H2S),meas.range:1～240ppm,quantity:10pcs/box

Hydrogen Sulfide (H2S) Detection Tubes (1 to 240 ppm) Gastec Detection Tube No. 4L measures Hydrogen Sulfide with a Range of 1 to 240 ppm.

• Measuring Range:
  • 1 to 10 ppm
  • 10 to 120 ppm
  • 120 to 240 ppm
• Number of Pump Strokes: 2 to 10, 1, 1/2
• Correction Factor: 1/2 to 1/10, 1, 2
• Sampling Time: 45 seconds per pump stroke
• Detecting Limit: 0.2 ppm (10 pump strokes)
• Changes from White to Brown
• Corrections for temperature & humidity: Unnecessary
• Reaction Principle: H2S + Pb(CH3COO)2 → PbS + 2CH3COOH
• Relative Standard Deviation: 5% (for 10 to 120 ppm)
• 3 Year Shelf Life
• Store the tubes at cool and dark place.

• 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