Ultra-Low Temperature And Cryogenic Freezers

		Revco cryogenic freezers maintain stable -140C and -150C storage temperatures without liquid nitrogen. ULT-7150 shown with optional temperature recorder

Revco Ultima Cryogenic
Storage Freezers, Cryogenic Temperatures Without Liquid Nitrogen

Revco Ultima Cryogenic Freezers are designed for long-term storage of biologicals at uniform temperatures of -140°C and -150°C, safely below the -130°C glass transition temperature of water. Cell viability is improved because biologically relevant, thermally driven reactions are not known to occur.

Revco Cryogenic Freezers include all features, control and performance attributes of the Ultima Series freezers, plus many important advantages not available when using liquid nitrogen.

Safer, more convenient than LN₂
Stable cryogenic temperature of -140°C and -150°C without liquid nitrogen as a cooling medium.
Patented single-compressor refrigeration system.
Temperature uniformity from top to bottom dramatically improved when compared to liquid nitrogen vapor.
Lower operating costs than LN₂ freezers of similar capacity.
100% of interior space is usable; 100% of stored samples are maintained below critical temperature.
Ample interior volume with capacity of up to 21,600 samples in Model ULT-10140 and up to 14,400 samples in Model ULT-7150 (2 ml vials in boxes).
Uses standard inventory system of racks and fiberboard boxes; see accessories.

The Ultima Difference
Ultima Series Cryogenic Freezers have all design features common to Ultima chest cabinets including:
Revco IntrLogic™ microprocessor controller.
Built-in surge protection with "Check Fuse" indicator light.
Additional four year parts warranty on compressor.
Built-in voltage boost detects and protects against low voltage conditions.
RS-232 data port with system software package.

Performance Features
Microprocessor Control System
Tamper-resistant touchpad data entry and function selectors for added security.
Digital feedback loop to monitor internal and external variables.
Key-operated switch for main power and alarm systems.
Adjustable operating temperature and high/low limit alarm functions with factory-set defaults for quick start-up.
Extra large digital temperature display, resolution to 1°C.
On-board AC power monitoring with digital read-out of actual line voltage.
Voltage boost system with indicator light; advises of low source voltage below safe parameters and indications voltage boost system is activated.
Clean filter indicator advises user to clean condenser intake filter.

Alarm/Monitor System
Built-in safety alarm with automatic continuous-charge battery back-up provides full-function in case of power failure.
A.I.M. (Automatic Incident Monitor) - initiates a visual flashing warning if the system has encountered problems due to power failure or excess ambient temperature.
Power failure or temperature deviation triggers audible and visual warning.
Independent high and low alarm setpoints adjustable in 1°C setpoints.
Digital display of actual battery standby capacity; flashing low battery indicator advises when to replace battery.
Touchpad alarm test function physically warms internal probe to simulate alarm condition.
Surge suppressor indicator advises to check intercept fuse.
RS-232 data port with system software package.
Exterior alarm contacts for remote monitoring.
Tamper proof key switch guarantees alarm "ON" function.

Refrigeration System
Single-compressor refrigeration system designed to achieve cryogenic temperatures using common refrigeration components.
Extra BTU removal capacity for warm product or high ambient temperature conditions.
Industrial-grade refrigeration compressor.
Integrated compressor thermal overload and electrical component protection system to extend freezer life.
An enhanced sound insulation package to minimize noise and vibration , and to allow greater choice of site selection for installation.

Cabinet Construction, General Features
-140°C model temperature performance guaranteed in a +32°C (+90°F) ambient; -150°C model temperature performance guaranteed in a +30°C (+86°F) ambient.
Low-profile chest design to provide easy access to inventory system.
Minimum 5" foamed-in-place urethane insulation, CFC-free, to protect product against high ambient conditions.
Washable condenser intake filter to maintain peak operating efficiency; no tools required.
Heavy-duty counterbalanced lid with keyed lid lock, built-in for security.
Double-seal lid gaskets and sub-lids to eliminate frost build-up.
All-steel cabinet with high-impact epoxy finish for easy cleaning.
Built-in access port, 1" diameter.
Full-length lid handle.
Recessed heavy-duty casters.

Optional Accessories
Liquid nitrogen back-up system with indicator lights to warn of an empty cylinder or low battery power.
For additional information on inventory components and other accessories, see Accessories.

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