Gastec รหัส No.4LK(20～40ppm) หลอดวัดความเข้มข้นของแก๊ส,Detector tube for hydrogen sulphide(H2S),scale range:1～40ppm ,quantity:10pcs/box,(meas.range:20～40ppm)

Hydrogen Sulfide (H2S) Detection Tubes (1 to 40 ppm) Gastec Detection Tube No. 4LK measures Hydrogen Sulfide with a Range of 1 to 40 ppm.

• Measuring Range:
  • 1 to 2 ppm
  • 2 to 20 ppm
  • 20 to 40 ppm
• Number of Pump Strokes: 2, 1, 1/2
• Correction Factor: 1/2, 1, 2
• Sampling Time: 1 minute per pump stroke
• Detecting Limit: 0.25 ppm (2 pump strokes)
• Changes from White to Brown
• Corrections for temperature & humidity: Unnecessary
• Reaction Principle: H2S + Pb(CH3COO)2 → PbS + 2CH3COOH
• Relative Standard Deviation: 10% (for 2 to 6 ppm), 5% (for 6 to 20 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

TUBE NAME	Hydrogen Sulfide
CHEMICAL FORMULA	H2S
MEASURING RANGE	1-40ppm
NO. TESTS PER BOX	10
STORAGE	Store tubes in a cool dark place
TUBE NUMBER	4LK