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
-    The European 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. 

Device Items to be tested   Japan Industrial Standard K 0804 American National Standards Institute / Industrial Safety Equipment Association 102 European Standard 1231 
Deutsches Institut für Normung  - DIN 33882 International Union of Pure and Applied Chemistry  
Gas Sampling Pump Volume Sampled   ± 5% allowance ± 5% allowance ± 5% allowance ± 5% allowance ± 5% allowance
  Air Leakage   ≤ 3% or ≤ 3% /min ≤ 3% /min
≤ 3 ml./min  ≤ 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 4000 pump strokes in 40 min. To assure the above performance with 5000 pump strokes 
 None

 Detector Tube

Channeling of Air Flow through Detector Tube   ≤ 20%
≤ 20%
≤ 25%

 -

≤ 20%
  Vertical Deviation of Reagent Layer   ≤ 2mm ≤ 2mm None

 -

≤ 2mm
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
± 30% at 20% and above of measuring 
range
± 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  ± 50% at lower limit of measuring range
 ± 50% for 1/5 or less of measuring range
± 35% for 1/2 of prescribed concentration
  Shelf Life    -  -

-

2 years  -