Effective testing and monitoring of gases is a cornerstone of workplace safety, environmental protection, and process control across industries such as oil & gas, chemical manufacturing, mining, and HVAC. Unintentional releases of toxic, flammable, or asphyxiant gases can lead to serious health hazards, environmental damage, and regulatory non-compliance. This course provides participants with a comprehensive grounding in the principles, techniques, and instruments used to detect, measure, and track gas concentrations in a variety of settings.