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http://www.lumasenseinc.com/EN/products/gas-monitoring/ventilation-measurement/

These are the public entries for this link:

• Indoor Air Quality
  Measurements of Indoor Air Quality (IAQ) is an important application for detection of Carbon Dioxide, Carbon Monooxide and Volatile Organic Compounds.
  By lauramu in Public bookmarks with air indoor quality
• Doser System
  The doser system marks the supply-air of the room with a known amount of tracer-gas such as Sulphur Hexa Flouride, Freon 134a, Freon 152 or Nitrous Oxide.
  By LisaMode in Public bookmarks with doser system tracer-gas

NB: The average rating is calculated using the rating for both public and private entries for this link.