Thermo Scientific™ Cryogenic Storage Chest Freezers

Description

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.

• 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 in. (12.7cm) foamed-in-place closed-cell, CFC-free urethane insulation
• Access port, 1 in. (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.