Profile: Cryofab, Inc. manufactures and services cryogenic equipment & accessories. We offer portable dewars, transfer systems, dewar flasks and superconducting magnet dewars. The CMSH helium dewar is designed for minimum loss storage, transportation and dispensing of liquid helium. It requires no liquid nitrogen shielding or helium gas circulation. The CLH series portable liquid hydrogen dewars are intended for low pressure transport and storage. They have features such as bayonet connection for low heat leak transfers, common vent for piping away relief devices & exhaust port and built-in vacuum insulated fill/withdrawal port.