CO2 Back-up System

Antech advanced CO2 backup system BS-1 is to ensure optimal security for critical samples stored in Ultra-Low Temperature Freezers. It controls injection of CO2 into freezer when freezer temperature rises above the preset temperature value. It also reminds users to fill or replace their CO2 cylinders when pressure is low.

CO2 Back-up System


· Compact design, small footprint, can be placed on freezer top;                  

· Temperature display, setting temperature adjustable by user;

· Unique low CO2 alarm, reminding user to change CO2 bottle in time;

· USA-made ASCO brand ultra-low temperature electromagnetic valve.


Safety & Protection

· Valve test button to check whether electromagnetic valve works normally;

· High/Low temperature alarm, low battery alarm, low CO2 alarm;

· Stop injection of CO2 when door opens, protecting user from being injured by liquid CO2 (need to be connected with ULT freezer door switch).



· Stainless steel construction, rust-free, easy cleaning;

· Hose & injection tube with sponge cover for insulation

· Rechargeable battery for 48 hours working time. 

BasicClimate ClassN
Cooling TypeDirect Cooling
RefrigerantLiquid CO2
PerformanceCooling Performance (°C)-70
Temperature Range (°C)-40~-70
Temperature Increment (°C)1
ElectricalPower SupplyAC 100~240V, 50/60Hz
Power (W)20
Electrical Current (A)0.25
Net/Gross Weight11.2/13.6kg
Exterior Dimension (W*D*H)200*400*160 (mm)
7.8*15.7*6.3 (in)
Packing Dimension (W*D*H)370*530*330 (mm)
14.6*20.9*13 (in)
FunctionHigh/Low Temperature AlarmYes
Low Liquid CO2 AlarmYes
Low Battery AlarmYes
Sensor Failure AlarmYes
Main Power Failure AlarmYes
Valve Open Indicator LightYes
Main Power On Indicator LightYes
Valve Test ButtonYes
AccessoriesHose (connecting backup system & CO2 cylinder)3 meter
Injection Tube (connecting backup system & freezer)2 meter

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