Quest is the System Solution for Gas Monitoring
Gas Monitor Comparison Guide
            
  Features: ST90 SC100 SL100 SC200 MC2000 ML2000  
  Personal Single Gas Monitor Yes Yes Yes - - -  
  Personal Multi-Gas Monitor - - - Yes Yes Yes  
                 
  Available Sensors: ST90 SC100 SL100 SC200 MC2000 ML2000  
  Oxygen Yes Yes Yes Yes Yes Yes  
  Combustibles(LEL) - - - Yes Yes Yes  
  Carbon Monoxide Yes Yes Yes - Yes Yes  
  Hydrogen Sulfide Yes Yes Yes - Yes Yes  
  Nitrogen Dioxide Yes Yes Yes - Yes Yes  
  Chlorine Yes Yes Yes - Yes Yes  
  Ammonia - Yes Yes - Yes Yes  
  Hydrogen Cyanide - Yes Yes - Yes Yes  
  Nitric Oxide - Yes Yes - Yes Yes  
  Ethylene Oxide - Yes Yes - Yes Yes  
  Sulphur Dioxide Yes Yes Yes - Yes Yes  
                 
  Alarm Points: ST90 SC100 SL100 SC200 MC2000 ML2000  
  High Toxic/LEL/Oxygen Yes Yes Yes Yes Yes Yes  
  Low Oxygen Yes Yes Yes Yes Yes Yes  
  Toxic TWA Yes Yes Yes - Yes Yes  
  Toxic STEL (15 Min) Yes Yes Yes - Yes Yes  
  Low Battery Yes Yes Yes Yes Yes Yes  
                 
  Power Sources: ST90 SC100 SL100 SC200 MC2000 ML2000  
  Disposable Alkaline Battery Yes Yes Yes Yes Yes Yes  
  Lithium Battery Yes - - - - -  
  Ni-MH Rechargeable Battery - - - Yes Yes Yes  
  Ni-Cad Rechargeable Battery - - - Yes Yes Yes  
                 
  Miscellaneous: ST90 SC100 SL100 SC200 MC2000 ML2000  
  EMI/RFI Protection Yes Yes Yes Yes Yes Yes  
  QuestSuite Pro Compatible - - Yes - - Yes  
                 
Brochures Available:
English Version (pdf) 1.45M
Spanish Version (pdf) 1.9M

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