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International Standards and Approvals

Gastec has achieved SEI certification for 21 tubes. No other manufacturer has more detector tubes certified by the Safety Equipment Institute (SEI) than Gastec. For more information on SEI certification, please click here.

Additionally, Gastec’s detector tubes and pumps are compliant with standards from a number of international approval organizations:
-    National Institute for Occupational Safety and Health
-    Japan Industrial Standard
-    American National Standards Institute / Industrial Safety Equipment Association
-    British Standard
-    Deutsches Institut für Normung
-    International Union of Pure and Applied Chemistry
-    National Institute for Occupational Safety and Health (US)

The following international standards regulate the properties of detector tubes for measuring pollutants in work places. 

DeviceItems to be tested Japan Industrial Standard K 0804American National Standards Institute / Industrial Safety Equipment Association102 British Standard 5343 
Deutsches Institut für Normung  - DIN 33882International Union of Pure and Applied Chemistry  
Gas Sampling PumpVolume Sampled ± 5% allowance± 5% allowance± 5% allowance± 5% allowance± 5% allowance
 Air Leakage ≤ 3% or ≤ 3% /min≤ 3% /min
None
 ≤ 3 ml./min≤ 3% /min
 Durability
 To assure the above performance with 100 pump strokes 
To assure the above performance with 10 pump strokes 
  To assure the above performance with 5000 pump strokes 
 
 Channeling of Air Flow through Detector Tube ≤ 20%
≤ 20%
≤ 20%
 ≤ 20%
 Vertical Deviation of Reagent Layer ≤ 2mm≤ 2mm≤ 1mm ≤ 2mm
Detector Tube  
Indication Accuracy Allowance
For higher concentration± 25% for 1/3 or higher concentration of calibration scale
± 25% for 1, 2 or 5 times of standard concentration
- 20% to 30% for occupational exposure limit
± 30% for 1/5 or higher of measuring range± 25% for 1, 2 or 5 times of prescribed concentration
       
  For lower concentration 35% for 1/3 or lower concentration of calibration scale ± 35% for 1/2 of standard concentration - 20% to 30% for occupational exposure limit
 ± 50% for 1/5 or less of measuring range
± 35% for 1/2 of prescribed concentration
 Shelf Life  - -2 years2 years -
  
              

 
 
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