Ultra-low freezer selection: zone first, then volume

Step 1: Identify Temperature Zones

Temperature zones are hard constraints. The storage object determines the required temperature range, chooses to be lower than the standard, and chooses to be higher than the cost of electricity. The common four gears of the ultra-low temperature storage box are -25 °C, -40 °C, -60 °C, and -86 °C. The same model often supports multi-gear settings. First confirm the required temperature of the storage object, and then confirm whether a margin is required.

Step 2: Determine the volume

Volume is estimated based on the current stock plus two to three years of growth, do not buy by peak. Taking the vertical DW-L series as an example, the volume is divided from 28L to 938L: a small number of samples in a single department start from 28L to 108L; the department level usually falls within 308L to 608L; the hospital or central library level looks at 708L to 938L.

Step 3: Consider sample morphology

The importance of internal structure and sealing design is determined by whether the freezing box is placed flat or on the freezing shelf, whether the internal shelf needs to be freely adjusted, and whether the door will be opened and closed frequently. Frequently accessed scenarios should focus on temperature recovery and alarm settings after opening the door.

Step 4: Confirm the access frequency and recording requirements

Compliance scenarios usually require temperature recording and traceability. Optional temperature recorder to copy data via USB interface. If remote monitoring and over-temperature alarms are required, they should be raised at the selection stage, rather than refilled.

Step 5: Check the site against the power supply

Large vertical boxes are more than one meter wide, with doors, elevators, and hallways first. In terms of power supply, the wide voltage band (187V ~ 242V) design can adapt to voltage fluctuations, but it is still necessary to confirm the capacity of the socket and the line condition.

Common Misconceptions

• Only look at the nominal temperature, do not look at the temperature control accuracy and the uniformity in the box
• The volume was full, leaving no room for growth, and two years later, it was forced to move
• Ignore alarm and record configuration, only make up for the need at the time of acceptance
• There are no measuring doors in the venue, and the equipment can't enter downstairs.

By following these five steps, your needs can already be accurately described. Send us the temperature zone, volume, and site size, and we will give you the corresponding model and configuration list.