Profile: Advanced Research Systems, Inc. designs and manufactures closed & open cycle cryogenic coolers. We integrate the cryostat providing instrumentation, vacuum shrouds, radiation shields, sample holders, temperature controllers, mounting stands and vacuum systems for each cryocooler. Our products include 1.7K closed cycle cryocooler, 4.2K low vibration ARS displex interface, helitran for optical microscopy and 4K ARS displex cryocoolers. Our closed cycle cryo-refrigerator features 1.7 to 325K operating range and JT circuit uses low-pressure helium gas. We design ARS Displex DE-204 closed cycle cryo-refrigerator which is used in X-Ray diffraction, detector cooling and UHV manipulators.