at scott-marrin, we understand how critical accurate calibration standards are to your profession. that is why product quality is the foundation of our organization. when blending calibration gases, product quality must be an integral part of the production process. it can not be added in at a later production stage. this is what 30 years of manufacturing calibration standards has taught us. this is why each stage of our production process is controlled, analyzed, measured and recorded as necessary.
each cylinder goes through several stages during the production process. first, we hydro test our cylinders with a computer controlled hydrostatic testing machine to ensure vessel integrity. we then valve each cylinder with calibrated devices sensitive to the unique properties of aluminum. each cylinder is then prepared based on proprietary processes developed by scott-marrin to maximize stability of the gas mixture. these proprietary processes are the result of extensive research of individual gases and cylinder properties. the cylinders are then filled using partial pressure, partial volume and/or gravimetric techniques. from here, each cylinder is handled in accordance to the gas mixture's unique requirement. final analysis is the last step. however, the cylinder has actually undergone several analysis and several proprietary stages during the process. final analysis confirms the final cylinder composition and the product is then ready to be shipped.