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Memmert ultra-low temperature freezer ULT1000eco, 966 l, -50 to -86 °C, inverter compressors

Product information "Memmert ultra-low temperature freezer ULT1000eco, 966 l, -50 to -86 °C, inverter compressors"

With an internal volume of 966 litres, the Memmert ULT1000eco ultra-low temperature freezer is the largest model in the eco series and cools samples to between minus 50 and minus 86 °C. It can accommodate up to 770 2-inch cryoboxes, making it an attractive option for biobanking with high storage requirements.

Largest model in the eco series for centralised storage

The interior can support up to 440 kilograms; each of the three height-adjustable shelves can support up to 220 kilograms; two stainless-steel interior doors and the shelves divide the interior into four sections. With external dimensions of 1,285 by 1,992 by 973 millimetres and a net weight of around 425 kilograms, delivery should be planned accordingly: In its carton, the unit measures 1,440 × 2,250 × 1,080 millimetres and must be transported in an upright position. At the installation site, the ULT1000eco can be moved and locked in place on its castors.

Two inverter compressors for high capacity

Two cascade-connected inverter compressors cool the large interior, the first stage using R290 and the second stage using R170, via an air-cooled condenser. The inverter compressors adjust their speed to match the cooling demand; the cooling system is designed for precise temperature control and high energy efficiency.

Touchscreen, sensors and interfaces

The 7-inch touchscreen in the outer door controls the temperature to an accuracy of 0.1 °C. A Pt1000 sensor continuously monitors the chamber; any deviations are signalled by a visual and audible alarm. Ethernet LAN and USB are standard features, whilst remote monitoring is available as an option.

Protection against power cuts and door

The insulated stainless steel outer door, fitted with a mechanical door lock and door-open detection, protects the large interior from being opened without being noticed. There is a 26-millimetre-diameter feed-through or pressure relief vent on the side. In the event of a power cut, a buffer battery maintains the alarm and monitoring functions.

When is the ULT750eco sufficient?

If the full capacity of 770 boxes is not expected to be utilised in the foreseeable future, or if less floor space is available, the ULT750eco, with 576 boxes and a smaller footprint, already covers many applications. For central biobanks with several connected departments and long-term high growth, the ULT1000eco, as the largest model in the eco series, remains the option offering the greatest capacity.

Typical applications

The ULT1000eco is suitable for central biobanks and institutes with particularly high storage requirements:

  • Long-term storage of biological materials such as DNA and RNA, proteins and enzymes, blood and serum samples, vaccines or tissue samples
  • Clinical and research laboratories for samples from clinical trials and microbiological investigations
  • Life sciences and pharmaceutical applications such as biobanking, cell line preservation or stability testing, for example with mRNA vaccines
  • Specimen storage in forensic science

Technical details

Internal volume966 l
Internal dimensions (W×H×D)1,035 × 1,276 × 732 mm
External dimensions (W×H×D)1,285 × 1,992 × 973 mm
Setting temperature range-50 to -86 °C
Setting accuracy0.1 °C
Control unit7" touchscreen, integrated into the outer door
Cooling systemTwo cascade-connected inverter compressors, air-cooled condenser
RefrigerantStage 1: R290, Stage 2: R170
Temperature monitoringPt1000
AlarmVisual and audible, battery-backed in the event of a power failure
InterfacesEthernet LAN, USB
DoorInsulated stainless steel external door with mechanical lock
Interior configuration2 stainless steel internal doors, 3 height-adjustable shelves
Max. load440 kg total / 220 kg per shelf
Max. number of 2"/50 mm boxes770
InstallationMoves on castors and can be locked in place
Packaging dimensions (W×H×D)1,440 × 2,250 × 1,080 mm
Net weight / Gross weight (carton)approx. 425 kg / approx. 590 kg
Country of originNetherlands

Other sizes in the series

The eco series of Memmert ultra-low temperature freezers ranges from 244 to 966 litres in internal volume; all models feature the same temperature range and the same inverter cascade cooling system:

ModelInternal volumeSet temperatureDisplay
ULT240eco244 l-50 to -86 °C7-inch touchscreen
ULT360eco360 l-50 to -86 °C7-inch touchscreen
ULT500eco506 l-50 to -86 °C7-inch touchscreen
ULT750eco750 l-50 to -86 °C7-inch touchscreen
ULT1000eco (this page)966 l-50 to -86 °C7-inch touchscreen

The ULT1000eco is also available as the standard ULT1000 model, with the same temperature range of -50 to -86 °C and the same external dimensions of 1,285 by 1,992 by 973 millimetres.

Scope of delivery

  • 1x Memmert ULT1000eco ultra-low temperature freezer with insulated stainless steel external door and mechanical door lock
  • Standard interior configuration with 2 stainless steel interior doors and 3 height-adjustable shelves
  • Door-open detection
  • Side pressure relief vent with a diameter of 26 mm
  • Battery-backed alarm system

Regulatory information

The unit is an electrical appliance within the meaning of the German Electrical and Electronic Equipment Act (ElektroG). The WEEE registration number of the manufacturer, Memmert GmbH + Co. KG, is DE 66812464. Information on the return of old appliances can be found on our Environment and disposal page.

The refrigeration system operates in a cascade configuration using the refrigerants R290 (first stage) and R170 (second stage).

Individual requirements and procurement service

For critical samples, the ULT1000eco offers an optional CO₂ or LN₂ emergency system and remote monitoring, as well as optional interior fitting systems for flexible box configurations. Our procurement service will discuss equipment, spare parts and bespoke calibration with you in a personal consultation.

Volume: 966 l