优点: The Elan2 family of liquid Nitrogen generators provide you with clean, reliable, on-demand liquid Nitrogen at a touch of a button by extracting N2 direct from the air around you. All that is needed is a well ventilated semi-clean environment and standard wall electricity to make your very own liquid Nitrogen directly in your office or laboratory. Because the liquid Nitrogen generated has not been handled by industrial equipment and transport trucks, it is very clean making it ideal for clean rooms and medical applications.