The FreeZone -105°C 4.5 Liter Benchtop Freeze Dry Systems have ice holding capacity for light to moderate loads and have dual refrigeration systems for samples with very low eutectic points including ones containing small amounts of methanol or ethanol. They have a compact benchtop design and include a 12-Port Drying Chamber. A vacuum pump and sample containers, such as flasks, are the only additional components necessary for a complete system.

Features include:

• Dual 1/3 hp HCFC/CFC-free refrigeration systems to cool collector to -105°C (-157°F).
• LCD that displays system operating parameters, set-up parameters and alarm messages.
• Red alarm light that flashes and beeper that sounds to indicate that an abnormal system event has occurred, including: power failure, improper line voltage supply, collector temperature rise above -60°C, service vacuum pump (after 1000 hours of vacuum use), and moisture in collector.
• Moisture sensor that prevents refrigeration or vacuum start-up when moisture is detected in the collector chamber area.
• Vacuum control valve that maintains setpoint vacuum level.
• Vacuum break valve that bleeds air into the system when power to the freeze dryer or vacuum pump is shut off.
• Rear-mounted RS-232 port to transmit data to a user-supplied computer.
• Side-mounted, retractable, 9" collector drain hose.
• Clear acrylic lid, 3/4” thick, with 3" diameter port for connection of drying chamber (included).
• Side-mounted power switch and rear-mounted electrical receptacle (for vacuum pump connection).
• 3/4" OD vacuum connection, three feet of 3/4" ID vacuum hose and two clamps.
• Overall dimensions: 23.2" w x 25.2" d x 16.0" h (without drying chamber)
• Overall dimensions: 23.1" w x 25.7" d x 26.4" h (with drying chamber)
• Shipping weight 180 lbs.

• Teflon®-coated collector coil and chamber for processes involving corrosive compounds.
• Domestic or international electrical configuration.