Nitrogen dioxide gas detection tube

The nitrogen dioxide gas detection tube is a tool for rapidly measuring the concentration of harmful gases in the air. It is filled with a certain amount of detection agent in a thin glass tube and fixed with material, and then heated and melted at both ends to seal it. The detection agent generally uses silica gel, activated alumina, glass particles, etc. as carriers, making the method of measuring pollutant concentration in the detection tube simple and rapid; The disadvantage is lower accuracy. Detection range 0-50ppm 0-100ppm 0-200ppm 0-1000ppm

nitrogen dioxideGas detection tubeA long gas detection tube is a tool for quickly measuring the concentration of harmful gases in the air. It is filled with a certain amount of detection agent in a thin glass tube and fixed with material, and then heated and melted at both ends to seal it. The detection agent generally uses silica gel, activated alumina, glass particles, etc. as carriers, making the method of measuring pollutant concentration in the detection tube simple and rapid; The disadvantage is lower accuracy.

Principle:

The basic measurement principle of CO, CO2, H2S, O2, SO2, NH3 and other detection tubes is linear colorimetric method, which means that the measured gas undergoes a colored reaction with the indicator gel through the detection tube, forming a color changing layer (color changing column). The length of the color changing layer is proportional to the concentration of the measured gas.

Storage conditions:

Long gas detection tubes should be stored in a cool and dry place away from light, strictly prohibited from direct sunlight, and stored at a temperature not exceeding 40 ℃. Glass products should be handled with care.

Hydrogen sulfide gas detection tube ppm:
2-50
10-200
50-1000
50-1500
200-5000
0.5-5（500ml）
mg/m3:
2-60
5-100
10-200
50-1500
200-5000
%:0.1-4

Ammonia detection tubemg/m3：
1-30
5-100
10-300
20-500
50-1000

Carbon monoxide ppm: 5-100
mg/m3：
10-200
20-500
50-1000
200-5000

Sulfur dioxide mg/m3:
10-150
50-1500
200-6000

Carbon dioxide ppm: 300-5000
Mg/m3: 50-200000

Benzene mg/m3: 20-400

Toluene mg/m3: 50-1000

Xylene mg/m3: 50-1000

Chlorine gas mg/m3: 1-30

Gasoline mg/m3: 50-1000

Liquefied petroleum gas%: 0.01-0.2

Carbon disulfide mg/m3: 20-400

Hydrogen fluoride mg/m3: 1-30

Ethanol%: 0.1-6

Benzene mg/m3: 20-400 in benzene derivatives

Phosphine ppm: 2-50
mg/m3:
10-200
100-1500

Ozone ppm: 2-50
mg/m3: 0.3-10

Hydrogen chloride mg/m3: 1-30

Methanol mg/m3: 200-6000