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Antech MDF-40U450 — laboratory deep freezer.
A low-temperature cabinet for laboratory materials requiring a controlled −20 to −40 °C environment. Choose the capacity and internal layout for the containers and storage protocol used by your facility.
Key features
- Direct cooling with manual defrost supports low-temperature storage.
- The temperature display helps operators check the current chamber condition.
- Access for an independent temperature probe supports a separate monitoring procedure.
Specification revision
This listing retains the MDF-40U450 designation. The current manufacturer table labels its 450 L cabinet MDF-25U450 while specifying −20…−40 °C. Confirm the nameplate and the data sheet for the offered revision in writing before ordering.
Technical specifications
| Model | MDF-40U450 |
|---|---|
| Manufacturer | Qingdao Antech Scientific Co., Ltd., China |
| Capacity | 450 L |
| Temperature range | −20…−40 °C |
| Internal dimensions (W×D×H) | 650 × 570 × 627 mm × 2 |
| External dimensions (W×D×H) | 856 × 789 × 1960 mm |
| Net / gross weight | 144 / 172 kg |
| Rated power | 346 / 375 / 305 W |
| Electrical versions | 220 V / 50 Hz; 220 V / 60 Hz; 120 V / 60 Hz |
| Refrigerant | R290 |
| Defrost | Manual |
| USB / RS-485 | Included / included |
| Wi-Fi monitoring | Optional |
Installation and use
Confirm the electrical version before installation. Rated power is an electrical rating, not daily energy consumption. Storage temperatures and acceptance criteria must follow the material instructions and the facility’s approved procedure. The temperature display does not replace an independent monitoring and alarm response plan.
Frequently asked questions
How should storage capacity be selected?
Consider container dimensions, quantity, rack layout and space needed for air circulation or sample retrieval. Nominal chamber volume is not the same as usable loaded volume.
Does a 0.1 °C display imply 0.1 °C temperature uniformity?
No. Display resolution, stability over time and spatial temperature uniformity describe different properties. Validate the usable storage area through temperature mapping under the agreed protocol.
What should be confirmed before delivery?
Confirm the exact model revision, electrical supply, door arrangement, access route, ventilation clearance, shelves or racks, monitoring and backup provision. List optional accessories separately in the order specification.
Does the alarm battery run the cooling system?
An alarm backup battery in a stationary freezer does not power its compressors. Continued cooling requires suitable backup power or a compatible backup cooling system. Portable freezer run time depends on the actual battery and operating conditions.
Useful links
Compare models and select equipment: −40 °C laboratory and plasma freezers.