Helium/Nitorogen Gas Compressor/Blower System

Hi, I am looking for a helium and/or nitrogen prime mover(compressor,blower). The pressure exposure range is 10 to 95 bar. I need an pressure ratio of approximately 1 to 1.07. Effciency at this point is not of great importance, however flow rate is. I am looking for a tecdhnology that can provide a flow rate rannge of between 0 and 0.25 kg/s. I only require this piece of equipment temporarily to cover part of my opearting range. The operating conditions mentioned can be relaxed. Doew anyone know of someone who can help?