Compressed hydrogen is used for a variety of applications including alternative fuels, chemical manufacturing, industrial applications, hydrogenation of oils and research and development applications. The majority of these applications require clean, high pressure gas. In response to these applications we have developed the techniques to safely, cleanly and reliably compress this difficult gas. Our experience includes manufacturing standard compressors for discharge pressures between 1,000 and 20,000 psig (7 to 140 MPa) along with higher pressure units.