Cold Storage: Different Types of Lab Fridges and Freezers

Cold storage is a critical component of laboratory operations, ensuring the preservation and integrity of sensitive samples, reagents, and specimens. Lab fridges and freezers play a vital role in maintaining appropriate temperature conditions for storage.

In this blog post, we will delve into the various types of lab fridges and freezers, their specific functionalities, and their applications in laboratory settings.

1. Standard Refrigerators

Standard refrigerators, similar to those used in households, are commonly found in laboratories. These refrigerators maintain temperatures above freezing, typically around 4°C (39°F). They are suitable for general storage of non-perishable items such as reagents, buffers, and certain types of laboratory consumables. Standard refrigerators offer ample storage space, adjustable shelves, and convenient accessibility, making them versatile for a wide range of laboratory needs.

2. Ultra-Low Temperature Freezers

Ultra-low temperature (ULT) freezers are designed to maintain extremely cold temperatures, typically ranging from -80°C (-112°F) to -150°C (-238°F). These freezers are essential for long-term storage of biological samples, including DNA, RNA, proteins, and cell cultures. ULT freezers utilize advanced insulation techniques, efficient cooling systems, and robust compressors to achieve and sustain these ultra-low temperatures. Additionally, they often feature alarms and backup systems to ensure sample integrity and prevent temperature fluctuations.

3. Cryogenic Freezers

Cryogenic freezers utilize liquid nitrogen or liquid helium as a coolant to achieve and maintain extremely low temperatures, reaching as low as -196°C (-321°F). These freezers are specifically designed for the storage of biological materials, such as stem cells, embryos, and tissue samples. Cryogenic freezers offer superior temperature stability and minimize the risk of cross-contamination. Samples stored in cryogenic freezers are typically placed in cryovials or cryoboxes and stored in racks or specialized canisters for easy retrieval.

4. Pharmacy Refrigerators

Pharmacy refrigerators are purpose-built for storing medications, vaccines, and other temperature-sensitive pharmaceutical products. These refrigerators maintain temperatures between 2°C (36°F) and 8°C (46°F), ideal for preserving the potency and stability of medications. Pharmacy refrigerators often feature tight temperature control, alarms, and digital temperature displays to ensure regulatory compliance and patient safety. They are commonly used in hospitals, research facilities, and pharmacies

5. Blood Bank Refrigerators

Blood bank refrigerators are specifically designed for the storage of blood and blood products. These refrigerators provide precise temperature control, typically between 1°C (34°F) and 6°C (43°F), to maintain the integrity and safety of blood components. Blood bank refrigerators feature specialized storage systems, such as adjustable shelves and blood bag holders, to optimize storage capacity and organization. Additionally, they incorporate alarms and temperature monitoring systems to ensure compliance with strict regulations governing blood product storage.


Lab fridges and freezers are essential tools for preserving the integrity and viability of samples, reagents, and pharmaceutical products in laboratory settings. From standard refrigerators to ultra-low temperature freezers and cryogenic storage solutions, each type of cold storage device serves specific purposes and applications. By choosing the appropriate type of cold storage equipment and ensuring proper maintenance and temperature monitoring, laboratories can safeguard their valuable assets and maintain the quality of their research and diagnostic activities.


For all your laboratory supply and service needs, give Cenmed a call (732) 447-1100.

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