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PHCBi TwinGuard DU702/DU302 -86°C Ultra Low Temperature Freezer

UsedPHCbiEnvironmental growth chambersUnited States

Price on request

In stock

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Effective Capacity
25.7 cu.ft. (729 L) – (DU702 model) or 12.7 cu.ft. (360 L) – (DU302 model)
Storage (Boxes) For 2”/51 Mm Fiberboard Boxes
576 – (DU702 model) or 240 – (DU302 model)
Storage (Racks) For 2”/51 Mm Fiberboard Boxes
24 – (DU702 model) or 12 – (DU302 model)
Storage (Boxes) For 3”/76 Mm Fiberboard Boxes
384 – (DU702 model) or 144 – (DU302 model)
Storage (Racks) For 3”/76 Mm Fiberboard Boxes
24 – (DU702 model) or 12 – (DU302 model)
All 19 specifications
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Specifications 19

Brands
PHCbi
New/Used
Used
Effective Capacity
25.7 cu.ft. (729 L) – (DU702 model) or 12.7 cu.ft. (360 L) – (DU302 model)
Storage (Boxes) For 2”/51 Mm Fiberboard Boxes
576 – (DU702 model) or 240 – (DU302 model)
Storage (Racks) For 2”/51 Mm Fiberboard Boxes
24 – (DU702 model) or 12 – (DU302 model)
Storage (Boxes) For 3”/76 Mm Fiberboard Boxes
384 – (DU702 model) or 144 – (DU302 model)
Storage (Racks) For 3”/76 Mm Fiberboard Boxes
24 – (DU702 model) or 12 – (DU302 model)
Interior Dimensions
34x23x55″ – (DU702 model) or 18x21x47″ – (DU302 model)
Temperature Control Range
-50°C to -86°C in 1° increments (center of chamber, ambient temperature 30°C, no load)
Internal Doors
insulated; ABS, with stainless steel frames and positive latches
Shelves
Stainless steel Load: 110 lbs (50 kg) per shelf
Access Port
3; upper back wall (back-up system), bottom left (recorder sensor), bottom right (access); Inner diameter: 0.6 in (17 mm)
Compressor
(2) 1100 W – (DU702 model) or (2) 450 W – (DU302 model)
Evaporator
Tube On Sheet Type
Refrigerant
Mixed Hc/Hfc Blended,
Area Footprint
9.78 ft 2 (0.91 m 2 ) – (DU702 model) or 6.36 ft 2 (0.6 m 2 ) – (DU302 model)
External Dimensions
41x37x79″ – (DU702 model) or 31x39x73″ – (DU302 model)
Sound Level
52 Db(A) (Background Noise 20 Db(A))
Power
220v, 60 hz, 7.7A, 1670 W – (DU702 model) or 220v, 60hz, 5.1a, 860w – (DU302 model)

Product description

The PHCBi TwinGuard Ultra Low Temperature Freezer, models DU702 (25.7 cu.ft./729 L) and DU302 (12.7 cu.ft./360 L), delivers reliable freezing down to -86°C with advanced twin compressor technology for redundancy and rapid temperature recovery. Designed for critical long-term storage in biotechnology, molecular diagnostics, and biopharmaceutical production, this upright ULT freezer features:

  • Twin compressors working independently and in tandem, ensuring continuous cooling and backup
  • Temperature control range from -50°C to -86°C with 1°C increments, ideal for sensitive biomaterial preservation
  • Unique vacuum insulation panels combined with foamed-in insulation to enhance thermal stability while maximizing storage capacity
  • Solid external door plus two insulated sub-doors for minimized temperature fluctuations during sample access
  • High-contrast LCD touchscreen with graphic interface, comprehensive alarms (high/low temp, power failure, door ajar, fan issues), diagnostics, data logging, and USB connectivity for remote monitoring and data export
  • Three access ports for additional monitoring systems, backup connections, or instrumentation integration
  • Stainless steel shelves with 110 lbs (50 kg) load capacity per shelf, supporting diverse storage needs
  • Refrigerant with mixed Hc/Hfc blend for efficient cooling aligned with safety and environmental standards
  • ECO mode operation available to optimize energy consumption and cost-effectiveness

This ULT freezer is widely used across cell imaging, synthetic biology research, and bioprocessing workflows, making it an essential asset in environments requiring stable cryogenic temperature conditions for live-cell preservation, enzyme storage, and high-value biological sample management. Its ergonomic handle and quiet operation (52 dB(A)) increase usability in demanding laboratory settings.

With comprehensive alarm systems and optional password protection, the PHCBi TwinGuard freezer supports secure, uninterrupted storage critical in clinical diagnostics, biomanufacturing, and gene editing facilities, ensuring sample integrity through consistent ultra-low temperature control.

Why Questpair exists

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Frequently asked questions

How long does laboratory equipment typically last?

With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.

Can I get service for older equipment?

Yes. Every verified supplier states which service partners cover the instrument, and we list that alongside the offer.

Where can I buy parts?

Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.

What is the typical lead time for refurbished equipment?

Two to six weeks, depending on refurbishment scope and whether calibration is included.

Does laboratory equipment ship internationally?

We ship to 38 countries. Crating and customs handling are quoted with the instrument.

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Last updated 4 September 2026