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The SANYO Twin Guard Series

™

 satisfies 

the industry demand for safe, long-
term storage for the most high-valued 
materials. Two independent refrigeration 
systems, combined with optional liquid 
nitrogen or liquid CO

2

 back-up systems, 

offer a circle of protection unmatched in 
the marketplace. Developed for use with 
conventional inventory racks and boxes, 
the Twin Guard Series

™

 is ideal for stor-

age of sensitive stem cells, embryos, 
cell lines, and other rare specimens.

The Twin Guard Series

™

 Ultra-Low Freez-

er avoids conventional cascade refrigera-
tion technology by using two completely 
independent one-compressor, autocas-
cade cooling systems, each capable of 
maintaining ultra-low temperatures.

• Each refrigeration circuit includes a 

closed-loop cold-wall evaporator con-
figured in parallel to the other.

• Independent evaporators and cooling 

fans assure back up status at all times, 
eliminating system failure due to 
sub-component failure in conventional 
cascade systems configured of mutu-
ally dependent high- and low-stage 
systems.

Stem Cells, Cord Blood, T-Cells, Engineered Tissue, 

Organ/Tissue, Vaccines, Bone Marrow, Hybridomas,  

Lymphocytes, Cancer Cells, Clinical Specimens,  

Fibroblasts, Ova, Sperm 

Highly sensitive to temperature fluctuations or 

uneven storage temperatures at different positions 

within the interior chamber.

Enhanced temperature uniformity, top-to-bottom, 

front-to-back, assures sample stability at all  

inventory locations.

BSL-3/4 or Highly Secured Labs

Restricted access to the contained laboratory  

limits serviceability.

Twin Guard Series

™

 extends critical time necessary  

to react in the event of mechanical failure.

• In the unlikely event of a compressor 

failure in one system, the remaining 
system will automatically maintain a 
minimum of -65°C for an indefinite 
period. 

• In the event of a facility power failure 

with optional CO

2

 or LN

2

 backup sys-

tem installed, the freezer will maintain 
-65°C storage temperature for up to 
eight hours (CO

2

 backup system) and 

-65°C storage temperature for up to  
15 hours (LN

2

 backup system).

• A unique EcoMode

™

 deploys both sys-

tems in overlapping cycles to maintain 
-86°C and to reduce energy consump-
tion by as much as 15%.

• Evaporator coils embedded in the pat-

ented, high-tech, SANYO V.I.P. PLUS

™

 

vacuum-insulated thin-wall cabinet are 
strategically oriented to deliver the 
best temperature uniformity at all shelf 
levels, top-to-bottom and front-to-back.

• New SANYO-designed Cool Safe

™

 

refrigeration compressors feature inno-
vative refrigerant feedback processes 
to reduce compressor temperature, 
thereby extending compressor life and 
minimizing heat output.