Compressed Air Air is a nonflammable gas that is colorless and odorless Indianapolis businesses can purchase from American Welding & Gas, Inc.. The calibration and monitoring requirements mandated for optimal performance require precise and accurate baselines. The air we breathe, while containing about 21% oxygen in nitrogen, is made up of a number of other components that may vary by location, climate and immediate environment. Most often the concentrations of these varying components are the subject of the measurement. In most instances, just filtering ambient air can remove most of the particulate contamination but does not consistently provide a stable “zero” baseline.PurityPlus Air, Zero Air and Ultra Zero Air are your best choices for baseline calibration. These blends aren’t specialty filtered air, but rather are blends of 21% extremely high purity oxygen in the equivalent purity nitrogen. Depending on the measuring requirements, total impurities can be as low as one part per million, with specific impurity analysis in the 100 part per billion level, or lower.American Welding & Gas, Inc. produces PurityPlus Air that is used in or as a calibration gas for environmental, automobile and diesel engine emissions monitoring, industrial hygiene monitors for flammability, toxicity and explosivity, as well as trace impurity analyzers that monitor compounds that may provide longer term health risks. And PurityPlus Air is also used as a balance gas for many specialty gas mixtures to establish a second point of calibration in addition to the zero level provided by PurityPlus Air itself.If you are looking for someone to supply specialty air gases in Indianapolis then you should contact American Welding & Gas, Inc. - they are backed by a national network of labs to ensure high purity standards but provide customer service and support in your community. Give them a call today at or contact them through their online form.