Cold Storage Basics
What Is Cold Chain Storage and How Does It Work?
An introduction to temperature-controlled storage for laboratories, clinical teams and other facilities, from equipment selection through monitoring and response.
Cold chain storage is the practice of keeping temperature-sensitive material within a defined range while it is stored and used. The "chain" is more than a freezer or refrigerator: it also includes how material is received, where it is placed, how conditions are recorded, and who acts when an alarm signals a problem.
The required temperature depends on the material. A cell bank, a working reagent and a refrigerated clinical specimen may all need different equipment. Always start with the material's protocol or product specification rather than assigning a range based on its name alone.
What temperature ranges are involved?
Equipment is built for different ranges. The examples below come from equipment listed on our Solutions page:
| Storage type | Example equipment range |
|---|---|
| Laboratory and pharmacy refrigeration | +2°C to +8°C |
| Blood bank refrigeration | +2°C to +6°C |
| Laboratory freezers | −10°C to −22°C |
| Ultra-low temperature (ULT) freezers | −80°C to −86°C |
These are equipment ranges, not universal safe-storage ranges. The correct range for any material comes from its product specification or your protocol.
What equipment forms a cold-storage system?
Ultracold supplies and services equipment across −150°C to +8°C. The range includes cryogenic-range units, ULT freezers, laboratory freezers, laboratory and pharmacy refrigerators, and blood bank refrigerators. Upright, chest, ultra-slim and benchtop formats allow teams to plan for different quantities and access patterns.
Equipment choice also depends on the site. A full-size ULT freezer and a benchtop unit can have different electrical needs. Delivery access, clearance for maintenance and the room's ability to handle heat from the equipment all belong in the planning discussion.
How does monitoring fit in?
Monitoring creates a time-stamped record of storage conditions. Alarms identify readings outside an agreed range and escalate to named contacts. The team receiving those alerts needs a response plan, and the contacts and escalation should be tested at handoff.
The documentation your team needs may include temperature history, alarm events, installation records and service information. Ask what is included with the equipment or storage arrangement and agree on the scope before operations begin.
What happens from receipt to retrieval?
First, identify the material, its required range and how it is packed. Next, match it to a suitable location and record where it is held. During storage, monitor conditions and respond to alarms. When material is retrieved or moved, maintain an understandable record of what happened and when. Your own handling protocol governs each transition.
If material is held on-site, your team operates the equipment in its own space. If it is held off-site, the storage provider and your team need to agree on receipt, access, records and contingency steps. Neither arrangement removes the need to verify the material's specific storage requirements.
On-site equipment or off-site capacity?
On-site equipment may be useful when material is accessed frequently or the need is long-term. Off-site capacity may be part of an overflow, laboratory move or contingency plan. Available space, power, HVAC capacity and access frequency help determine which path fits.
Ultracold supplies on-site equipment today. Our monitored Orange County off-site facility is scheduled to open in October 2026, with expanded capacity planned for Spring 2027. Reservations are open now; the off-site facility is not yet available for storage.
To explore the equipment side, browse cold-storage solutions. For a broader look at monitoring, planning and future capacity, visit our cold-storage hub.