What is Zero Air? Zero Air, defined as "Atmospheric air purified to contain less than 0.1 ppm total hydrocarbons" by the US Environmental Protection Agency, is a useful or necessary gas for several types of scientific and analytical devices. How is Zero Air produced? Zero Air can be produced in a number of ways that fall into two main categories Synthetic production and Catalytic processing. The first, Synthetic production, involves mixing existing pure supplies of oxygen and