Gastec รหัสสินค้าNo.145หลอดวัดความเข้มข้นของแก๊ส,Detector Tube for Polytec,Meas.range:～ppm,Quantity:10pcs/Box

Propyl Acetate Detection Tubes (20 to 500 ppm) Gastec Detection Tube No. 145 measures Propyl Acetate with a Range of 20 to 500 ppm.

• Measuring Range: 20 to 500 ppm
• Pump Strokes: 2 (200 ml)
• Correction Factor: 1
• Sampling Time: 2 minutes per pump stroke
• Detecting Limit: 4 ppm (2 pump strokes)
• Changes from Yellow to Blackish Brown, a few minutes later changes to Pale Blue
• Corrections for temperature & humidity: Temperature correction is necessary
• Reaction Principle: CH3CO2CH2CH2CH3 + Cr6+ + H2SO4 → Cr3+
• Relative Standard Deviation: 15% (for 20 to 100 ppm), 10% (for 100 to 500 ppm)
• 2 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