Cryogenic Storage Chest Freezers


Maintain uniform temperatures of −140° and −150°C (safely below the −130°C glass transition temperature of water) with Thermo Scientific™ Cryogenic Storage Chest Freezers. These freezers offer mechanical cryopreservation for long-term biological storage and are safer and more convenient than LN2 systems.

Features:
Top-to-bottom temperature uniformity is dramatically improved when compared to LN2 vapor.
Cell viability is improved as biologically relevant, thermally driven reactions are not known to occur.
System offers manual defrost.

Refrigeration System:
Exclusive mixed refrigerant autocascade with a single, orbital air-cooled compressor
Downfeed evaporator
High-capacity air-cooled condenser with dual condenser fans
Washable condenser filter

IntrLogic™ Microprocessor Control System:
Touchpad data entry with digital display of all functions
Key-operated main power and alarm switch for setpoint security
Setpoints adjustable in 1°C increments
Independent operating temperature and high/low limit alarm functions

Alarm System:

Power failure or temperature deviation triggers audible and visual warning.
Automatic Incident Monitor identifies temperature deviation beyond alarm setpoints.
System includes adjustable safety alarm with automatic, continuous charge battery backup and digital battery indicator.
System includes touchpad alarm test function RS-232 data port with system software.
Exterior alarm contacts for connection to remote monitoring system.

Monitoring System:
Lifeguard compressor protection to monitor performance and automatically adjust to internal and external conditions
Extreme Ambient Alert that warns if room temperature can affect performance
Voltage Boost Indicator that advises of low source voltage below safe parameters and indicates voltage boost system is activated
On-board power monitoring with digital readout of incoming line voltage
Built-in surge suppressor
"Clean Filter" indicator

Construction:

Low-profile design for easy access to inventory
Heavy-gauge steel cabinet with high-impact powder paint finish
Heavy-duty counterbalanced lid with integrated keyed lock and independent sublids
Double-seal lid gaskets minimize frost buildup
Minimum 5″ (12.7cm) foamed-in-place closed-cell, CFC-free urethane insulation
Access port, 1″ (2.54cm) diameter, with cap
Recessed heavy-duty swivel casters

Ordering Information:

Uses standard Thermo Scientific inventory racks and fiberboard boxes, available separately. 208/230V model comes with P6 plug. 380V and 220/240V models require a hardwire connection.