Gastec รหัส No.92L หลอดวัดความเข้มข้นของแก๊ส,Gas detector tube for Acetaldehyde(CH3CHO),meas.range:1～20ppm,quantity:10pcs/box

Acetaldehyde Detection Tube (1 to 20 ppm) Measures Acetaldehyde With a Range of 1-20 ppm.

• 0.2 ppm (1 Pump Stroke)
• Sampling Time: 2 minutes per pump stroke
• Changes from Yellow to Brown
• 2 Year Shelf Life
• Relative Standard Deviation: 10 %（for 1 to 6 ppm）, 5 %（for 6 to 20 ppm）
• Reaction principle:
  • 3CH3CHO + (NH2OH)3H3PO4 → H3PO4
  • H3PO4 + Base → Phosphate

• 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