Maximising Sample Preservation: Tips for Choosing the Right Freezer

Sample preservation is a critical aspect of scientific research, healthcare, and various industries where the integrity and longevity of samples are of utmost importance. Whether you are working in a laboratory, a pharmaceutical company, or a medical facility, selecting the right freezer, such as an ultra low freezer, is essential for maintaining the quality and viability of your samples over an extended period. However, with numerous available options, choosing the ideal freezer can take time and effort. This article will explore five key points to consider when selecting a freezer to maximise sample preservation. By understanding these factors, you will be better equipped to make an informed decision and ensure the longevity of your valuable samples.

Listed below are the five key points to consider when selecting a freezer to maximise sample preservation:

Temperature Stability

One of the fundamental aspects to consider when choosing an ultra low freezer is its temperature stability. Maintaining a consistent and reliable temperature is crucial for preserving the integrity of samples, especially those that are temperature-sensitive or susceptible to degradation. Fluctuations in temperature can lead to irreversible damage and compromise the accuracy of experimental results. To ensure optimal sample preservation, look for freezers equipped with advanced temperature management systems, such as microprocessor controls and temperature alarms.

Uniformity of Cooling

In addition to temperature stability, the uniformity of cooling within a freezer is equally essential. Variations in temperature distribution can result in uneven freezing and potential damage to samples. When evaluating freezer options, consider features promoting uniform cooling, such as forced air circulation or advanced cooling technologies. These features help to distribute the cold air evenly throughout the freezer, minimising temperature gradients and ensuring consistent freezing conditions for all samples. By selecting a freezer with excellent cooling uniformity, you can safeguard the integrity of your samples and avoid potential experimental errors.

Storage Capacity and Organisation

A freezer’s storage capacity and organisation are crucial considerations, mainly when dealing with large sample volumes or diverse sample types. Assess the available storage space and ensure it meets your specific requirements. Consider the dimensions, shelving options, and flexibility of the internal layout. Adjustable shelving, removable racks, or modular designs can enhance storage versatility and accommodate samples of various sizes and shapes. Some freezers also offer inventory management systems, such as barcode labelling or digital tracking, which streamline sample identification and retrieval processes.

Energy Efficiency

Energy efficiency is an increasingly important factor to consider when selecting a freezer to reduce operating costs and minimise environmental impact. Freezers are notorious for their high energy consumption, so choosing an energy-efficient model can significantly impact long-term savings and sustainability efforts. Look for freezers with high Energy Star ratings or those that utilise advanced insulation materials and compressor technology to improve energy efficiency. Additionally, automatic door-closing mechanisms, LED lighting, and adaptive defrosting systems can contribute to energy savings.

Backup Systems and Alarms

When working with valuable samples, it is crucial to have contingency plans in place to mitigate the risk of sample loss or damage due to unforeseen circumstances. A reliable freezer should come equipped with backup systems and alarms to provide an added layer of protection. These features can include backup power supply options, such as battery backups or generators, to sustain freezer functionality during power outages. Temperature and door alarms are also essential, as they notify users of deviations from set parameters or if the door is ajar.


Choosing the right ultra low freezer is a critical decision when it comes to maximising sample preservation. Considering the five key points outlined in this article, you can ensure that your samples remain viable and of high quality for an extended period. Temperature stability is crucial in maintaining the integrity of samples.