EPA protocol gases
Air Liquide offers sulfur dioxide two-component gas mixtures as EPA protocols. These EPA protocol gas mixtures are instrumental in helping you avoid non-compliance fines and downtime caused by inaccurate instrument calibration measuring sulfur dioxide emissions. Air Liquide’s specialty gas manufacturing facilities are registered participants of EPA’s Protocol Gas Verification Program (PGVP). Protocol standards are dual-analyzed, and for each reactive component, two separate analyses are performed and analyzed directly against metrology institute standards to determine the concentrations. Certificates of Accuracy are provided with each cylinder. In addition, sulfur dioxide is also offered as part of multi-component EPA protocols to meet any specification.
CEM DAILY STANDARDSTM
Sulfur dioxide gas mixtures manufactured as CEM DAILY STANDARDS are used in applications where the use of EPA protocol gases are not required. Zero blend tolerance is available as a result of our proprietary ACUBLEND™ technology. As a result, multiple cylinders exhibiting identical concentrations may be ordered, minimizing the need to recalibrate each time you change out a cylinder. These mixtures are available in two-component and multi-component variation.