Application field： The ultra low-temperature freezer is provided to departments of medicine, health, chemical industry, scientific research, etc. for low-temperature freezing, storage, test.With a thermometer probe, you can monitor the temperature at any timeAt ambient temperatures of 25°C: 1.5 hours cooling to -45°C; 2.5 hours to -60°C; 3.5 hours cooling to -80°C; Minimum temperature -86°CBeyond the set temperature ±10℃, the machine will issue a warning Cooling Engine：Free-piston Striling EngineSize： 30.7x16.1x20.3 in (78x41x51 cm)Inner Size：13.1x8.7x13.4 in (33x22x34 cm)Defrost：ManualSteady State Energy：70W (Average Power at -86°C, at 25°C ambient temperature)Insulation：High Performance vacuum insulated panels and polyurethane foamChamber Material：304 Stainless SteelPackage：Wooden Box Package Please let it stand for 4 hours before switching on the power. Heat dissipation components, such as fan air vents, are at least 50 cm away from obstacles Parameters： Voltage：110V/220V AC or 12V/24V DC Temp Settings Increments：0.1°C +25.0°C to -86.0°C (+77°F to -123°F) Input Power：110W Temperature Alarm： Over set temperature at +/- 10°C Display：Digital Temperature Display Noise：<55 dB(A) at 1 meter Control Sensor：One RTD (PT100 Class A) Easy to move： The ultra-low temperature refrigerator weighs 59LB and can be easily moved by adult men. Safety buckle： The refrigerator lid has a self-locking function to ensure the airtightness of the refrigeratorInternal true capacity 22L= other 25L marked capacity Ultra-low temperature The minimum temperature of the refrigerator can be switched from 0 to minus 86°, and the precise temperature control panel Stirling new compressor - a wide range of temperature Settings than traditional compressors: +18 ° C ~ -45 ° C, other traditional low temperature refrigerators can not reachUsing a Stirling Engine for cooling, this freezer has higher efficiency, lower power consumption, lower weight and a smaller size compared to a traditional freezer.A Stirling engine is a heat engine that is operated by the cyclic compression and expansion of a gas between different temperatures, resulting in a net conversion of heat energy to mechanical work.Ultra-low temperature refrigerators are PID control programs that need a balance between cooling and temperature control. The closer to the set temperature, the less cold output of the compressor, the configuration of high-precision probe, real-time monitoring of the temperature, temperature difference control within ±1℃.LABFENG laboratory ultra-low temperature refrigerator, program Settings not only pursue cooling, but also pursue the ability to control temperature. This upgraded product can definitely meet the needs of accurate temperature control Upgrade 22L Large Capacity - Larger Capacity Than 20L(B09QSSCH9C/ B0C5HPYG5L) Ultra-Low Temperature Freezer Suggestions for use: Due to the small volume, it is recommended to wait until the temperature in the refrigerator is stable for a period of time before placing the items. Add items in small amounts multiple times, so the temperature will drop fasterPlease read the instructions carefully before use. There may be overtemperature alarm or error code displayed during use. Please refer to the instructions and mail on Amazon at any time.Machine operation logic: When the refrigerator is opened and starts to cool down, the overtemperature alarm will not be activated. When the temperature reaches the set temperature, the overtemperature alarm is automatically enabled. If the temperature exceeds the set temperature +/-10 degrees, the alarm will be generated. Please put items in small amounts several times while usingAvailable effective capacity 22L, upgrade Stirling compressor, temperature range can be adjusted 18°C ~86°C (64.4 ° F ~-122.8 ° F), voltage range 12V/24V/110V/220V can be used, can use power supply and battery power supply, easy handling, stable temperature, Can be customized to -87°C(-124.6 ° F), 20L Ultra-Low Temperature Freezer-86°C Portable Lab Cryogenic Freezer -123 °F... -86°C Ultra-Low Temperature Freezer80L Lab Cryogenic Freezer -123 °F Samples ... -86°C Ultra-Low Temperature Freezer 28L Lab Cryogenic Freezer -123 °F Samples... -86°C Ultra-Low Temperature Freezer 50L Lab Cryogenic Freezer -123 °F Samples... -86°C Ultra-Low Temperature Freezer 58L Lab Cryogenic Freezer -123 °F Samples... LABFENG 18°C ~86°C/64.4℉~-122.8℉ Protable Ultra-Low Temperature Freezer 12V-2... Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Customer Reviews 4.2 out of 5 stars 17 4.2 out of 5 stars 17 4.2 out of 5 stars 17 4.2 out of 5 stars 17 4.2 out of 5 stars 17 4.2 out of 5 stars 17 Price $1,896.00$1,896.00 $4,699.00$4,699.00 $2,599.00$2,599.00 $3,399.00$3,399.00 $3,399.00$3,399.00 $2,359.00$2,359.00 Opening mode Upper door Upper door Upper door Upper door Upper door Upper door Power supply voltage 220V/50HZ with Transformer 110V/60HZ 110V/60HZ 110V/60HZ 110V/60HZ 12V~220V Temperature -40°C to -86°C -40°C to -86°C -40°C to -86°C -40°C to -86°C -40°C to -86°C 18°C to -86°C Volume 20L 80L 28L 50L 58L 22L Net weight 84LB 187LB 123LB 158LB 253LB 52LB Power 270W 450W 300W 380W 380W 110W Certification CE/EMC CE/EMC CE/EMC CE/EMC CE/EMC CE/EMC,CE/LvD,cQc Foam Layer Foaming Cyclopentane Foaming Cyclopentane Foaming Cyclopentane Foaming Cyclopentane Foaming Cyclopentane 60 mm Foamed Cyclopentane + Vacuum Insulation Board Cooling Pipe Liquid Ethane (R170) Ethane (R170) Ethane (R170) Ethane (R170) Ethane (R170) Ethane (R170) Compressor Conventional compressor Conventional compressor Conventional compressor Conventional compressor Conventional compressor Sterling upgrades the compressor