Gastec รหัสสินค้า No.7H หลอดวัดความเข้มข้นของแก๊ส,Detector tube for phosphine,meas.range:200～5500ppm,quantity:10pcs/Box

Phosphine (PH3) Detection Tubes (200 to 5500 ppm)Gastec Detection Tube No. 7H measures Phosphine with a Range of 200 to 5500 ppm.

• Measuring Range: 200 to 2500 ppm, 2500 to 5500 ppm
• Number of Pump Strokes: 1, 1/2
• Correction Factor: 1, 2.2
• Sampling Time: 1 minute per pump stroke
• Detecting Limit: 5 ppm (1 pump stroke)
• Changes from Yellow to Blackish brown
• Corrections for temperature & humidity: Temperature correction is necessary
• Reaction Principle: PH3 + Na2Pd (SO3)2 ➝ Pd
• Relative Standard Deviation: 10% (for 200 to 800 ppm), 5% (for 800 to 2500 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