Gastec Detector Tubes, NO & NO2 Detector Tube 2.5-200ppm, SEI Certified, 10/Pack

Gastec Detector Tubes, NO & NO2 Detector Tube 2.5-200ppm, SEI Certified, 10/Pack

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Gastec Detector Tubes, NO & NO2 Detector Tube 2.5-200ppm, SEI Certified, 10/Pack

$76.00
Availability: In stock
Product SKU
10
Gastec Detector Tubes, NO & NO2 Detector Tube 2.5-200ppm, SEI Certified, 10/Pack is available to buy in increments of 1

Gastec Detector Tubes, SEI Certified, NO + NO2 (Separate Quantification) NO: 2.5-5 ppm and NO2: 5-200 ppm (5 - NO; 5 - NO2), 10/Pack

GASTEC gas detector tubes are thin glass tubes with calibration scales printed on them so you can directly read concentrations of the substances (gases and vapours) to be measured. Each tube contains a particulate matrix (e.g. silica gel, alumina) which binds carefully selected and highly stable detection reagents that are especially sensitive to the target substance in order to produce a distinct layer of colour change. The tubes are hermetically sealed at both ends.

Today over 600 types of target gas can be measured.

 

Features
  • 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

 

The handy design GASTEC GV-100 cylinder pump, with an inner capacity of 100mL, weighs only 240g. It is designed for use with almost all GASTEC short-term quick-measuring detector tubes.

 

SEI certification

GASTEC detector tubes satisfy the quality standards and norms in the world.

The SEI certification program is well known as one of the most stringent certification programs. We are proud of having the highest number of SEI certified detector tubes worldwide.
SEI:Safety Equipment Institute(U.S.A)

SEI certification

SEI stands for Safety Equipment Institute, a private nonprofit organization established in 1981 in the USA to administer the first non-government third-party certification program for testing and certification of a broad range of occupational safety and protective products. In 1986, it established a national certification system for detector tubes which succeeded and enhanced the existing NIOSH (National Institute for Occupational Safety and Health) certification program. The SEI certification program is accredited by the American National Standards Institute [ANSI] and utilises the ANSI/ISEA l02 American National Standard for Gas Detector Tubes - Short Term Type for Toxic Gases and vapours in Working Environments.

The certification process is stringent and objective as the examination and auditing process for the products and manufacturing facilities is conducted through independent third-parties who are specialists in the field. Currently SEI certifies 21 detector tubes for 21 types of gases/vapours.

More Information
Technical Specifications
nce
Name of Gas
Nitrogen Dioxide
(NO2)
Nitric oxide
(NO)
Nitric oxide
(NO)
Measuring Range
2.5 to 200 ppm2.5 to 5 ppm5 to 200 ppm
Number of Pump Strokes
121
Correction Factor
11/21
Detecting Limit
0.5 ppm (n=1)1 ppm (n=2)1 ppm (n=2)
Sampling Time45 seconds per pump stroke
Colour ChangeWhite → Yellowish orange
Reaction PrincipleNO2 tube:
NO2 + o-Tolidine ¨ Yellowish orange product
NO tube:
NO + Cr6+ + H2SO4 →NO2
NO2 + o-Tolidine ¨ Yellowish orange product
Coefficient of VariationNO2 tube: 10% (for 2.5 to 20 ppm), 5% (for 20 to 200 ppm)
NO tube:10% (for 5 to 20 ppm), 5% (for 20 to 200 ppm)
Shelf Life3 Years
Corrections for temperature & humidityNO2 tube:Unnecessary 
NO tube:Temperature correction is necessary
Store the tubes at cool and dark place.
Possible coexisting substances and their interferences (NOTE)
For the NO2 tube
SubstanceConcentrationInterferenceChange colour by itself to
Nitric Oxide NoRed(entrance of the detecting layer)
Hydrogen chloride Unclear demarcationNo
Ozone, Halogens,
Chlorine dioxide
1/5+20%Yellowish orange
Sulphur dioxide50 ppmUnclear demarcationNo
Possible coexisting substances and their interferences (NOTE)
For the NO tube
SubstanceConcentrationInterferenceChange colour by itself to
Hydrogen chloride NoNo
Ozone, Halogens, Chlorine dioxide NoNo
Sulphur dioxide NoNo
Nitrogen dioxide NoNo
Calibration gas generationPermeation tube method
TLV-TWATLV-STELExplosive range
NO2: 0.2 ppm(2014)
NO: 25 ppm(2014)
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