Biogas is a renewable and sustainable energy source produced through biological processes like anaerobic fermentation or digestion of organic material. The main components are methane and carbon dioxide, with some other permanent gases, hydrogen and hydrogen sulfide. The exact composition is related to the origin of the organic material. To increase the caloric values of biogas, it can be necessary to remove some CO2 or blend it with other hydrocarbon streams. Agilent offers two new Biogas Analyzers - The 490 Micro GC Biogas Analyzer (G3582A#110) for analysis of pure biogas, and the 490 Micro GC Biogas Analyzer Extended (G3582A#111) for when biogas is mixed with other hydrocarbon streams (natural gas, liquefied petroleum gas (LPG)).