Ultra-Low Temperature and Cryogenic Storage Freezers

Ultima II Series
Cryogenic Storage Freezers

Model ULT-10140-9, 10.3 cu.ft. capacity (292 liter), -140°C, shown with optional temperature recorder.		Refrigeration Control Orbital IntrLogic™ Choose from two chest models, two cryogenic operating temperatures. Model ULT-7150-9, -150°C, shown with optional temperature recorder.

Ultima II Series Cryogenic Operating Temperature
-150°C, Model ULT-7150-9
-140°C, Model ULT-10140-9
Air-cooled refrigeration systems are engineered to maintain design temperatures in warm ambient conditions:
Model ULT-7150-9, +30°C (+86°F);
Model ULT-10140-9, +32°C (+90°F)

Cryogenic Temperatures Without Liquid Nitrogen
Revco Ultima II 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

Safer, More Convenient Than LN₂
Revco cryogenic freezers include all features, control and performance attributes of the Ultima II Series freezers, plus many important advantages not available when using LN₂
Stable cryogenic temperature of -140°C and -150°C without LN₂ as a cooling medium
Patented, single compressor, orbital refrigeration system
Top-to-bottom temperature uniformity dramatically improved when compared to LN₂ vapor
Lower operating costs than LN₂ freezers of similar capacity
100% of interior space is usable, with stored samples 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 Revco inventory racks and fiberboard boxes; see Accessories

Refrigeration System
Exclusive mixed refrigerant autocascade with a single, orbital refrigeration compressor, air-cooled
CFC-free refrigerants
Downfeed evaporator for most efficient refrigerant flow
High capacity air-cooled condenser with dual condenser fans, aerodynamically shaped fan blades
Washable condenser filter keeps fins free of dust to maintain peak cooling efficiency; no tools required for removal

Comparison of temperature distribution in a liquid nitrogen freezer (vapor phase) and mechanically refrigerated cryogenic freezer (i.e. Revco Ultima II Model ULT 10140-9). Graph represents temperatures (°C) at relative locations within the chamber. Data suggests that 100% of the Ultima II storage space maintains uniform storage temperatures safely below -130°C, while temperature in LN₂ vapor system is dependent on storage location.

Control System
Exclusive IntrLogic™ microprocessor control system with touchpad data entry and digital display of all functions
Setpoint security system with key-operated switch for main power and alarm locks in temperature and alarm setpoints
Independent operating temperature and high/low limit alarm functions with factory-set defaults for quick start-up, all setpoints adjustable in 1°C increments

Ultima II IntrLogic™ microprocessor controls monitor all functions for safe, dependable and economical operation; shown with optional LN2 back-up system.

Electrical System
Automatic voltage boost compensates for low voltage and brown-out conditions
On-board power monitoring with digital read-out of incoming line voltage
Built-in surge suppressor minimizes effect of voltage spikes from incoming electrical service

Alarm System
A.I.M. (Automatic Incident Monitor) identifies any temperature deviation beyond alarm setpoints, with rapid flash for current event, slow flash if event was self corrected; A.I.M. archives most deviated temperature
Adjustable safety alarm with automatic, continuous charge battery back-up provides full alarm function in case of power failure
Power failure or temperature deviation triggers audible and visual warning
Digital battery indicator displays battery capacity; flashing low battery indicator advises when to replace battery
Touchpad alarm test function physically warms internal probe to simulate alarm condition
RS-232 data port with system software package
Exterior alarm contacts for connection to remote monitoring system

Monitoring System
Lifeguard compressor protection monitors performance and automatically adjusts to internal and external conditions, extending compressor life
Extreme ambient alert warns if room temperature may affect performance
Voltage boost indicator advises of low source voltage below safe parameters and indicates voltage boost system is activated
Surge suppressor indicator advises to check intercept fuse
Clean filter indicator light advises when to remove and wash condenser filter

Chest Cabinet Construction
Low profile design for easier access to inventory
Heavy-duty counter-balanced lid with integrated keyed lid lock for security; 3.1 cu.ft. (88 liter) model includes locking provision only
Double seal lid gaskets to minimize frost build-up
Independent sub-lids provide additional protection
Minimum 5" (12.7 cm) foamed-in-place urethane insulation, closed cell, CFC-free, to protect product against high ambient conditions
Heavy-gauge steel cabinet with high-impact powder paint finish
Rounded interior corners for easy cleaning
Access port, 1" (2.54 cm) diameter, with cap
Recessed heavy-duty swivel casters

Inventory System and Accessories
Optional inventory components including racks, boxes and dividers may be ordered separately or as full-load inventory systems
See Accessories section for information on optional temperature recorders, free-standing LN₂ back-up systems, inventory components, validation testing, calibration certificates and associated products