Choose a medical freezer by the required temperature range first, then by usable capacity. The correct conditions depend on the product, sample and approved storage protocol. This guide outlines the equipment ranges used for reagents, plasma and biological materials, and the practical checks to make before ordering.
Temperature ranges and their applications
- −25 °C equipment: for reagents, test kits and samples whose instructions allow this range. See −25 °C medical and laboratory freezers.
- −40 °C equipment: a category used in plasma and other temperature-sensitive storage workflows. The required product temperature and freezing process must be confirmed separately. See −40 °C plasma freezers.
- −60 to −86 °C equipment: low- and ultra-low temperature systems for laboratory storage protocols requiring these conditions. Browse low- and ultra-low temperature freezers.
- −150 °C equipment: specialised cryogenic freezer systems for applicable storage protocols. See −150 °C cryogenic freezers.
View the complete medical and laboratory freezer range.
Choosing equipment for blood plasma
Distinguish between rapid freezing and subsequent storage: a storage freezer is not automatically a validated rapid plasma freezer. Confirm the required core temperature, freezing time, load and storage duration with the blood service's approved procedures. A −40 °C setpoint is not a universal requirement for every plasma product.
Compare freezing performance where applicable, chamber temperature uniformity, alarms and provision for independent monitoring. Our plasma freezer category provides model specifications for comparison.
Vaccines and temperature-sensitive medicines
Some vaccines require refrigerated conditions, commonly +2 to +8 °C; others have frozen or ultra-cold requirements. Always use the specific manufacturer's current instructions. Never assume that a lower temperature is safer: freezing can damage products that must remain refrigerated. For refrigerated storage, choose a suitable medical refrigerator.
When is an ultra-low temperature freezer needed?
Laboratories use ULT freezers when their validated sample or reagent protocols require ultra-low temperatures. The required setpoint and storage duration depend on the material and its preparation. Compare usable capacity, storage racks, temperature recovery, cooling system reliability and backup arrangements. Browse our low- and ultra-low temperature models.
Freezer selection checklist
- Temperature range: compatible with the specific storage protocol.
- Usable capacity: sufficient for the packaging, racks and expected growth.
- Temperature uniformity and recovery: under the planned load and operating conditions.
- Alarms: temperature deviation, door opening and power failure, as required.
- Temperature records: integrated recording or provision for an independent data logger.
- Backup arrangements: distinguish alarm/controller backup from backup refrigeration.
- Energy use, heat output, noise and installation clearances.
- Documentation: specifications, maintenance requirements and qualification records appropriate to the facility.
Qualification and cold-chain documentation
Equipment selection is only part of the process. Confirm performance in the intended location and maintain temperature records during use. See our equipment validation guide and temperature monitoring equipment. Testing and documentation should follow your approved procedures.
Frequently asked questions
Which freezer should I choose for plasma? Start with the blood component's requirements and your validated freezing and storage procedures. Confirm whether the task requires rapid freezing, storage, or separate equipment for each.
How does −86 °C equipment differ from −40 °C equipment? It serves a different temperature range. Choose the range required by the material and protocol, rather than assuming the coldest option is always appropriate.
Can vaccines be stored in a freezer? Only if the specific vaccine's instructions permit or require it.
Do I need temperature monitoring? Monitoring and records help demonstrate that the required conditions were maintained. Choose the monitoring arrangement specified by your procedures.
Need help selecting a freezer?
Send us your required temperature range, intended contents, usable capacity and installation conditions. We can help compare medical and laboratory freezers, with delivery and service enquiries across Ukraine. Contact us.
Further references: UK blood service guidance on plasma components and CDC vaccine storage and handling guidance. Follow the product instructions, approved procedures and applicable local requirements.