Carbon Dioxide is one of the most important factors in an indoor growroom or glass house. Photosynthesis is the term used to describe the process by which plants combine Co2 molecules with water molecules to form complex sugars, there is a resultant spare oxygen atom which is released back into the air, the sugars being further processed by the plant to form natural polymers for growth. The ambient level of Co2 in air is 300-400ppm, fast growing plants in your grow room or glasshouse can use all the available CO 2 in less than an hour slowing photosynthesis and therefore growth to a virtual halt. The Evolution NDIR Co2 Analyser The Evolution Co2 Analyser utilises non dispersive Infra-Red sensing technology for fast accurate Co2 monitoring. Combined with exquisite design and ground breaking low price the sensor is highly accurate and less than half the price of similar products on the market and making available the ultimate control system to the average grower.