Blizzard HC NU-99728J -80°C Ultralow Freezer
Safeguard vital research with the Blizzard NU-99728J -86°C ULT freezer—a high-capacity solution for reliable, long-term cell preservation with advanced temperature control systems.

- Overview
- Specifications
- Reviews
- Resources
- Options
Overview
The Blizzard NU-99728J -86°C Ultralow Temperature Freezer provides dependable storage for sensitive biological samples including stem cells, blood, tissue, and vaccines. With a spacious 28.1 cu. ft. (796 L) interior, this unit supports high-volume sample preservation for research-intensive environments.
Precision temperature control is achieved through a dual-compressor cascade system and vacuum-insulated panel construction, ensuring stable and uniform storage conditions. Smart monitoring via audible and visual alarms, combined with a battery backup, keeps your lab informed even during power disruptions. Optional CO₂/LN₂ backup offers added security for mission-critical applications.
Engineered for durability and ease of use, the NU-99728J combines quiet operation, ergonomic access, and robust build quality—a reliable choice for PIs and lab managers dedicated to long-term research success.
Maximize Lab Efficiency with Smart Control Freezer
Secure & Efficient Storage with Advanced Insulation
Effortless Access with Smart Freezer Design
Seamless Data Management in Freezers
Specifications

2-inch Box Capacity | 500 |
Rack Capacity | 20 |
Access Port Location | Back Wall |
Back Up Battery for Alarm Functions | High/low temperature, power failure, door open, sensor failure, high ambient temperature, hot condenser and low battery alarms |
Cabinet Thickness Inches (mm) | 3.5 (90) |
Casters | All-direction caster with fixing stand |
Door Thickness Inches (mm) | 3.5 (90) |
Exterior Door | Single Door |
Exterior Door Seal | Quadruple Seal on the Outside Door |
Exterior Material | Color Coating Cold Plate Steel |
Fan Brand | EBM |
Inner Doors | 4 |
Insulation | VIP+CFC Free Foaming Agent |
Interior Door Seal | Single Seal on all Interior Doors |
Interior Material | Color Coating Electric Zinc Steel Plate |
Leg Levelers | 2 |
Locking Mechanism | Key |
Shelf Capacity lbs (kg) | 199 (90) |
Shelf Material | Stainless Steel |
Shelves | 3 Shelves, 4 Locations |
Style | Upright |
Adjustable High/Low Temperature Alarms | True |
Alarms | Temperature, Power Failure, Probe Failure, Condenser, Ambient Temperature, Door Ajar, Low Battery, etc. |
Auto Voltage Safeguard | Included |
Data Output Features | USB, RS-232/485 |
Power Switch | On-Off with Circuit Breaker |
Remote Alarm Terminals | Remote Alarm Port, RS232 / RS485 (Optional) |
Setpoint Security | Yes |
Est. Shipping Depth Inches (mm) | 42 (1067) |
Est. Shipping Height Inches (mm) | 84 (2137) |
Est. Shipping Width Inches (mm) | 44 (1118) |
Exterior Depth Inches (mm) | 38.6 (980) |
Exterior Depth with Door Open Inches (mm) | 74.80 (1900) |
Exterior Height Inches (mm) | 78 (1980) |
Exterior Width Inches (mm) | 41 (1041) |
Footprint Depth inches (mm) | 38.6 (980) |
Footprint Width inches (mm) | 41 (1041) |
Interior Depth Inches (mm) | 28.2 (716) |
Interior Height Inches (mm) | 51.6 (1310) |
Interior Volume Cubic Feet (Liters) | 25.7 (728) |
Interior Width Inches (mm) | 30.2 (766) |
Shelf Depth Inches (mm) | 26.6 (677) |
Shelf Width Inches (mm) | 29.5 (750) |
Electric Protection Type | |
Electrical Configuration | 230V50Hz |
Input Power (W) | 1650 |
Power Consumption KWh/day | 10.5 |
Power Cord | Grounded Three Prong Power Plug, Rated 16A |
Power Cord Length Foot (Meter) | 8.2 ft (2.5m) |
Rated Current (A) | 9.0 |
Rated Frequency (Hz) | 50 |
Rated Voltage (V) | 230 |
Stable Current (A) | 7.5 |
Sound Level | 50 dB(A) |
1 Minutes Door Open Recovery Time (25°C ambient running temp -75°C) in Minutes | 45 |
Cool Down Time (25°C ambient to -80°C) in Minutes | 310 |
Heat Rejected (BTU/Hour) | 1404 |
Warm-Up Time (25°C ambient -80°C to -50°C) in Minutes | 270 |
Compressor Capacity Watt | 950 |
Compressor Type/Brand/Number | Hermetic Reciprocating Type / SECOP / 2 |
Condenser Type | Enhanced Micro-Channel & Forced-Air Cooled |
Defrost Method | Manual |
Evaporator Type | Cold Wall With Enhanced Heat Transfer Treatment |
Refrigerant Charge/Flammable | R290 in 1st Stage / R290 + R170 Mix in 2nd Stage / Flammable in JE Version; R290 in 1st Stage / R170 in 2nd Stage / Flammable in JG & JGA Versions |
Refrigeration System Type | Direct cooling |
Ambient Temperature (°C) | 10 to 32 |
Temperature Accuracy °C | ±1 |
Temperature Control | Microprocessor Controller |
Temperature Range °C | -40 to -86 |
Temperature Sensor Type | RTD (Pt100) |
Temperature Uniformity °C | ±5 |
Est. Shipping Weight lbs (kg) | Estimated 849 lbs (385 kgs) |
Net Weight lbs (kg) | 761 lbs (345 kg) |
2-inch Box Capacity | 500 |
Rack Capacity | 20 |
Access Port Location | Back Wall |
Back Up Battery for Alarm Functions | High/low temperature, power failure, door open, sensor failure, high ambient temperature, hot condenser and low battery alarms |
Cabinet Thickness Inches (mm) | 3.5 (90) |
Casters | All-direction caster with fixing stand |
Door Thickness Inches (mm) | 3.5 (90) |
Exterior Door | Single Door |
Exterior Door Seal | Quadruple Seal on the Outside Door |
Exterior Material | Color Coating Cold Plate Steel |
Fan Brand | EBM |
Inner Doors | 4 |
Insulation | VIP+CFC Free Foaming Agent |
Interior Door Seal | Single Seal on all Interior Doors |
Interior Material | Color Coating Electric Zinc Steel Plate |
Leg Levelers | 2 |
Locking Mechanism | Key |
Shelf Capacity lbs (kg) | 199 (90) |
Shelf Material | Stainless Steel |
Shelves | 3 Shelves, 4 Locations |
Style | Upright |
Adjustable High/Low Temperature Alarms | True |
Alarms | Temperature, Power Failure, Probe Failure, Condenser, Ambient Temperature, Door Ajar, Low Battery, etc. |
Auto Voltage Safeguard | Included |
Data Output Features | USB, RS-232/485 |
Power Switch | On-Off with Circuit Breaker |
Remote Alarm Terminals | Remote Alarm Port, RS232 / RS485 (Optional) |
Setpoint Security | Yes |
Est. Shipping Depth Inches (mm) | 42 (1067) |
Est. Shipping Height Inches (mm) | 84 (2137) |
Est. Shipping Width Inches (mm) | 44 (1118) |
Exterior Depth Inches (mm) | 38.6 (980) |
Exterior Depth with Door Open Inches (mm) | 74.80 (1900) |
Exterior Height Inches (mm) | 78 (1980) |
Exterior Width Inches (mm) | 41 (1041) |
Footprint Depth inches (mm) | 38.6 (980) |
Footprint Width inches (mm) | 41 (1041) |
Interior Depth Inches (mm) | 28.2 (716) |
Interior Height Inches (mm) | 51.6 (1310) |
Interior Volume Cubic Feet (Liters) | 25.7 (728) |
Interior Width Inches (mm) | 30.2 (766) |
Shelf Depth Inches (mm) | 26.6 (677) |
Shelf Width Inches (mm) | 29.5 (750) |
Electric Protection Type | |
Electrical Configuration | 220V60Hz |
Input Power (W) | 1650 |
Power Consumption KWh/day | 10.5 |
Power Cord | Grounded Three Prong Power Plug, Rated 16A |
Power Cord Length Foot (Meter) | 8.2 ft (2.5m) |
Rated Current (A) | 9.0 |
Rated Frequency (Hz) | 60 |
Rated Voltage (V) | 220 |
Stable Current (A) | 7.5 |
Sound Level | 50 dB(A) |
1 Minutes Door Open Recovery Time (25°C ambient running temp -75°C) in Minutes | 45 |
Cool Down Time (25°C ambient to -80°C) in Minutes | 310 |
Heat Rejected (BTU/Hour) | 1574 |
Warm-Up Time (25°C ambient -80°C to -50°C) in Minutes | 270 |
Compressor Capacity Watt | 950 |
Compressor Type/Brand/Number | Hermetic Reciprocating Type / SECOP / 2 |
Condenser Type | Enhanced Micro-Channel & Forced-Air Cooled |
Defrost Method | Manual |
Evaporator Type | Cold Wall With Enhanced Heat Transfer Treatment |
Refrigerant Charge/Flammable | R290 in 1st Stage / R290 + R170 Mix in 2nd Stage / Flammable in JE Version; R290 in 1st Stage / R170 in 2nd Stage / Flammable in JG & JGA Versions |
Refrigeration System Type | Direct cooling |
Ambient Temperature (°C) | 10 to 32 |
Temperature Accuracy °C | ±1 |
Temperature Control | Microprocessor Controller |
Temperature Range °C | -40 to -86 |
Temperature Sensor Type | RTD (Pt100) |
Temperature Uniformity °C | ±5 |
Est. Shipping Weight lbs (kg) | Estimated 849 lbs (385 kgs) |
Net Weight lbs (kg) | 761 lbs (345 kg) |
2-inch Box Capacity | 500 |
Rack Capacity | 20 |
Access Port Location | Back Wall |
Back Up Battery for Alarm Functions | High/low temperature, power failure, door open, sensor failure, high ambient temperature, hot condenser and low battery alarms |
Cabinet Thickness Inches (mm) | 3.5 (90) |
Casters | All-direction caster with fixing stand |
Door Thickness Inches (mm) | 3.5 (90) |
Exterior Door | Single Door |
Exterior Door Seal | Quadruple Seal on the Outside Door |
Exterior Material | Color Coating Cold Plate Steel |
Fan Brand | EBM |
Inner Doors | 4 |
Insulation | VIP+CFC Free Foaming Agent |
Interior Door Seal | Single Seal on all Interior Doors |
Interior Material | Color Coating Electric Zinc Steel Plate |
Leg Levelers | 2 |
Locking Mechanism | Key |
Shelf Capacity lbs (kg) | 199 (90) |
Shelf Material | Stainless Steel |
Shelves | 3 Shelves, 4 Locations |
Style | Upright |
Adjustable High/Low Temperature Alarms | True |
Alarms | Temperature, Power Failure, Probe Failure, Condenser, Ambient Temperature, Door Ajar, Low Battery, etc. |
Auto Voltage Safeguard | Included |
Data Output Features | USB, RS-232/485 |
Power Switch | On-Off with Circuit Breaker |
Remote Alarm Terminals | Remote Alarm Port, RS232 / RS485 (Optional) |
Setpoint Security | Yes |
Est. Shipping Depth Inches (mm) | 42 (1067) |
Est. Shipping Height Inches (mm) | 84 (2137) |
Est. Shipping Width Inches (mm) | 44 (1118) |
Exterior Depth Inches (mm) | 38.6 (980) |
Exterior Depth with Door Open Inches (mm) | 74.80 (1900) |
Exterior Height Inches (mm) | 78 (1980) |
Exterior Width Inches (mm) | 41 (1041) |
Footprint Depth inches (mm) | 38.6 (980) |
Footprint Width inches (mm) | 41 (1041) |
Interior Depth Inches (mm) | 28.2 (716) |
Interior Height Inches (mm) | 51.6 (1310) |
Interior Volume Cubic Feet (Liters) | 25.7 (728) |
Interior Width Inches (mm) | 30.2 (766) |
Shelf Depth Inches (mm) | 26.6 (677) |
Shelf Width Inches (mm) | 29.5 (750) |
Electric Protection Type | |
Electrical Configuration | 115V60Hz |
Input Power (W) | 935 |
Power Consumption KWh/day | 10.5 |
Power Cord | Grounded Three Prong Power Plug, Rated 20A |
Power Cord Length Foot (Meter) | 8.2 ft (2.5m) |
Rated Current (A) | 18.0 |
Rated Frequency (Hz) | 60 |
Rated Voltage (V) | 115 |
Stable Current (A) | 8.1 |
Sound Level | 50 dB(A) |
1 Minutes Door Open Recovery Time (25°C ambient running temp -75°C) in Minutes | 45 |
Cool Down Time (25°C ambient to -80°C) in Minutes | 310 |
Heat Rejected (BTU/Hour) | 1200 |
Warm-Up Time (25°C ambient -80°C to -50°C) in Minutes | 270 |
Compressor Capacity Watt | 950 |
Compressor Type/Brand/Number | Hermetic Reciprocating Type / SECOP / 2 |
Condenser Type | Enhanced Micro-Channel & Forced-Air Cooled |
Defrost Method | Manual |
Evaporator Type | Cold Wall With Enhanced Heat Transfer Treatment |
Refrigerant Charge/Flammable | R290 in 1st Stage / R290 + R170 Mix in 2nd Stage / Flammable in JE Version; R290 in 1st Stage / R170 in 2nd Stage / Flammable in JG & JGA Versions |
Refrigeration System Type | Direct cooling |
Ambient Temperature (°C) | 10 to 32 |
Temperature Accuracy °C | ±1 |
Temperature Control | Microprocessor Controller |
Temperature Range °C | -40 to -86 |
Temperature Sensor Type | RTD (Pt100) |
Temperature Uniformity °C | ±5 |
Est. Shipping Weight lbs (kg) | Estimated 849 lbs (385 kgs) |
Net Weight lbs (kg) | 761 lbs (345 kg) |
Review
Resources
Brochures
Specifications
Request Your Quote for a NU-99728J
Thank you for completing the form.
We will be in touch. If you have any urgent questions, please reach out at 763-553-1270.