TwinGuard Series -86°C/-80°C Ultra-Low Temperature Freezers

Product Series Overview Download

PHCbi brand TwinGuard® Series upright and chest ultra-low temperature (ULT) freezers have a time-tested dual cooling system. Designed to provide enhanced security for the preservation of vital stored items, TwinGuard houses dual, independent refrigerating circuits within a single unit. In the event of a malfunction in one circuit, the second circuit seamlessly takes over, steadfastly sustaining the in-chamber temperature. TwinGuard Series ULTs are ideal for critical preservation applications.

 

The advanced combination of redundant cooling systems, intuitive electronic controls, onboard monitors, and a frost-mitigating, ergonomic cabinet design represents more than 50 years of refrigerated sample protection for the life science industry.

 

 

 

Temperature Uniformity*

Data featured is for model MDF-DU702VXC-PA.

Superior and reliable preservation of your biological samples cannot be compromised for any reason. The primary purpose of an ultra-low temperature freezer is to protect a stored sample by achieving and maintaining uniform temperature to assure cell viability, regardless of where samples are stored inside. PHCbi brand TwinGuard Series ULT freezers undergo thorough temperature uniformity testing allowing us to provide our customers with temperature uniformity data that upholds our excellent performance.

 

 

*The data reflects performance metrics rather than official product specifications. Results from technical data sheet tests should not be used to establish regulatory parameters for specific customer applications.

The performance of the freezer will depend on factors such as the volume of customer products, storage configuration, selected options, operating conditions, test methods, and adherence to recommended maintenance practices.

Ongoing product improvements may lead to changes or omissions in this technical data sheet without prior notice. PHC Corporation of North America disclaims responsibility for any damage, injury, loss, or expenses arising from the misuse of the information provided.

 

 

Performance During Service Event

While performance is the first test of our product, long-term reliability is essential to protect your research, peace of mind, and return on your investment. The patented TwinGuard dual cool lab freezer system enhances the PHC reputation for reliability in refrigeration safety and predictive maintenance which is second to none in the world.

 

Two circuits work together for fast temperature recovery, while the secondary system keeps the temperature at -70°C if a service event occurs. With two independent systems each sustaining ultra-low temperatures, your samples remain safe. Optional CO₂ backup provides an extra layer of protection.

 

Opening the door of any ultra-low temperature freezer is a significant event. Because extreme inside/outside temperature differentials often exceed 100°C (212°F), careful planning is encouraged before accessing the interior. To minimize the door or lid opening duration, users should know the location of the stored product inside the freezer before accessing it. Such best practices lead to better chamber uniformity, faster recovery of setpoint temperature, and longer freezer life.

 

 

 

TwinGuard Series freezers are managed by a microprocessor-based digital controller designed for setpoint security, temperature display, system status, alarm functions, and predictive performance notifications.

 

Data is continuously collected throughout the system to predict any deviations from expected performance, that would initiate alarms with audible and visual alerts. All performance attributes are displayed and an internal time/temperature log is expressed in graphic form.

 

The TwinGuard LCD interface is available on TwinGuard series freezer models. On upright models, an eye-level, door-mounted color LCD touchscreen allows full user control while the USB port makes transferring logged data to a PC convenient.

 

PHCbi brand TwinGuard ultra-low temperature freezers ensure stable in-chamber temperature with twice the sample protection for double the peace of mind.

 

Model	MDF-DU702VXC-PA	MDF-DU502VXC-PA	MDF-DU302VXC-PA	MDF-DU700VXC-PA
Volume	25.7 cu.ft.	18.6 cu.ft.	12.7 cu.ft.	25.3 cu.ft.
Capacity (2" Boxes)	576	384	240	520
Capacity (3" Boxes)	385	256	144	360

 

 

 

 

About PHC Corporation of North America

PHC Corporation of North America, located in Wood Dale, IL, is a leader in laboratory equipment for the biopharmaceutical, life sciences, academic, healthcare and government markets. Product lines under the PHCbi brand include the space saving and energy efficient VIP® ECO and TwinGuard® ultra-low temperature freezers, cryogenic and biomedical freezers, pharmacy and high-performance refrigerators, cell culture CO₂ and multigas incubators, and Drosophila/plant growth chambers. PHC Corporation of North America is a subsidiary of PHC Holdings Corporation, Tokyo, Japan, which is a global healthcare company that develops, manufactures, sells, and services solutions across diabetes management, healthcare solutions, diagnostics and life sciences.