At Airgas, we understand specialty gases and what you need to successfully achieve accurate results. ALPHAGAZ 1 with SMARTOP Grade Hydrogen exceeds the purity recommendations of most laboratory instrument manufacturers and is ideal for any analytical and process control applications. In addition to guaranteed purity and consistency, ALPHAGAZ 1 comes equipped with SMARTOP cylinder valve technology that protects gas purity and helps you better manage gas use and improve safety. With a unique ergonomic top, visible on/off levers and at-a-glance cylinder content readings, your team always knows when the cylinder is open and how much gas you have left. See the Hydrogen pages under the Pure Gases Tab on the Menu of our Specialty Gas & Equipment Catalog for detailed gas purity information.