COOLVAC vacuum pumps are refrigerator cryo pumps which generate a vacuum when gaseous substances are bound to the cold surfaces within the pump by means of cryocondensation. Because of the pumping principle COOLVAC cryo pumps have a high effective pumping speed for all gases. COOLVAC vacuum pumps produce a hydro carbon free ultra high vacuum inthe pressure range from 10^-3 mbar to 10^-11 mbar (0.75•10^-3 to 0.75•10^-11 Torr).