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Memmert ultra-low temperature freezer ULT500eco, 506 l, -50 to -86 °C, inverter compressors

Product information "Memmert ultra-low temperature freezer ULT500eco, 506 l, -50 to -86 °C, inverter compressors"

The Memmert ULT500eco ultra-low temperature freezer operates at temperatures ranging from minus 50 to minus 86 °C and, with an internal volume of 506 litres, provides space for up to 384 2-inch cryoboxes. Institutes with long-term, predictable storage requirements will find this a medium-sized floor-standing model that offers significantly more capacity than the ULT360eco, without reaching the dimensions of the 750- and 1000-litre models.

506 litres for institutions with long-term storage requirements

The interior can support a total load of up to 360 kilograms, with each of the three height-adjustable shelves capable of bearing up to 180 kilograms. Two stainless steel internal doors divide the interior into four sections. Externally, the ULT500eco measures 850 by 2,000 by 888 millimetres; it is mounted on castors that can be locked in place and must be transported in an upright position.

Energy efficiency through inverter cascade

Two cascade-connected inverter compressors handle the cooling: the first stage uses R290, the second stage uses R170, with an air-cooled condenser. The inverter compressors adjust their speed to the cooling demand; the system is designed for precise temperature control and high energy efficiency. The standard ULT500 model, which is the same size, operates without inverter compressors and uses the refrigerant R455A in the first stage.

Touchscreen, Pt1000 and interfaces

The 7-inch touchscreen on the outer door displays the setpoint temperature and status at a glance; the setting accuracy is 0.1 °C. A Pt1000 sensor continuously monitors the temperature; any deviations are signalled by a visual and audible alarm. The cabinet comes as standard with Ethernet LAN and USB interfaces; remote monitoring is available as an option.

How the door and alarm perform in an emergency

The insulated stainless-steel outer door can be locked using the mechanical door lock, and is also fitted with a door-open detection system. On the side is a feed-through or pressure relief vent with a diameter of 26 millimetres. In the event of a power cut, a backup battery maintains the alarm and monitoring functions.

Larger or smaller than the ULT500eco?

If 264 boxes and a smaller footprint are sufficient, the ULT360eco is the better choice. If you anticipate needing more than 384 boxes, or if multiple user groups are to have simultaneous access, it is worth considering the ULT750eco, which offers 750 litres and 576 boxes. The ULT500eco itself is best suited to institutions with consistently high, but not extreme, storage requirements.

Typical applications

The ULT500eco is suitable for institutions and laboratories with extensive, ongoing 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 science 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 volume506 l
Internal dimensions (W×H×D)600 × 1,345 × 627 mm
External dimensions (W×H×D)850 × 2,000 × 888 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. load360 kg in total / 180 kg per shelf
Max. number of 2"/50 mm boxes384
InstallationMobile and lockable on castors
Packaging dimensions (W×H×D)1,080 × 2,220 × 1,080 mm
Net weight / Gross weight (carton)approx. 343 kg / approx. 430 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
ULT500eco (this page)506 l-50 to -86 °C7-inch touchscreen
ULT750eco750 l-50 to -86 °C7-inch touchscreen
ULT1000eco966 l-50 to -86 °C7-inch touchscreen

The ULT500eco is also available as the standard ULT500 model without inverter compressors, using R455A refrigerant instead of R290 in the first stage.

Scope of delivery

  • 1x Memmert ULT500eco 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 additional reliability, the ULT500eco offers an optional CO₂ or LN₂ emergency system and remote monitoring, as well as optional interior fit-out systems for flexible box configurations. Our procurement service will clarify equipment, spare parts and calibration on an individual basis.

Volume: 506 l