These FreeZone freeze dryers have an upright stainless steel or PTFE collector coil that holds 4.5 liters of ice before defrosting. Collector lid, 3/4" thick, has a neoprene gasket and 3" diameter port for connection of drying accessories (sold separately). The -50ºC (-58ºF) dryers have a single 1/3 hp HCFC/CFC-free refrigeration system which are suitable for aqueous samples, while the -105ºC (-157ºF) have two 1/2 hp systems and are suitable for samples with low eutectic points including acetonitrile, and dilute methanol and ethanol. The dryers are easy to operate due to the full color 5" touch screen control that comes compete with Lyo-Works™ OS. Real time display shows collector temperature and vacuum level. Setting include 5 different languages, time, time zone, temperature (ºC or ºF), and vacuum (mBar, Torr, or Pa). Other setting available include, alerts, display, sounds, screen time out, and maintenance alert.
Level-specific security lock-out prevents changes to programs and other system parameters. Data logging stores and displays data in table or chart format and can be exported via the side mounted USB port or rear mounted Ethernet connection. Other features include; Moisture sensor, vacuum control valve, vacuum break valve, side mounted quick-disconnect drain hose fittings, and rear mounted electrical receptacle for vacuum pump connection.
All models require (not included) vacuum pump with a displacement of at leat 98 liters per minute, 0.002 mBar ultimate pressure and fitting suitable for 3/4" ID vacuum hose, drying accessories, and freeze dry glassware.