What is the best way to determine the storage duration for different types of samples?

2 Follow the standard protocols

The second step is to follow the standard protocols and guidelines for your sample type and field of study. There may be specific regulations, standards, or best practices that dictate how to store and preserve your samples, such as ISO, ASTM, EPA, FDA, or CLIA. These protocols and guidelines may provide information on the optimal storage temperature, humidity, light, pH, oxygen, and other factors that influence the sample's quality and validity. They may also specify the maximum storage duration or shelf life for your samples, based on empirical evidence or testing.

3 Consider the sample purpose

The third step is to consider the purpose and use of your sample. Depending on what you want to do with your sample, you may need to store it for a shorter or longer period of time. For example, if you want to perform a quick analysis or test on your sample, you may only need to store it for a few hours or days. However, if you want to use your sample for long-term research or reference, you may need to store it for months or years. You should also consider the frequency and type of access you need to your sample, as this may affect its storage conditions and duration.

4 Monitor the sample quality

The fourth step is to monitor the quality and performance of your sample over time. Even if you follow the best storage practices, your sample may still deteriorate or change due to various factors, such as aging, contamination, or degradation. You should regularly check your sample for any signs of damage, discoloration, odor, or loss of activity or function. You should also verify that your sample meets the quality criteria and specifications for your intended analysis or test. If your sample shows any signs of deterioration or deviation, you should discard it or replace it with a fresh one.

5 Document the sample information

The fifth step is to document and record all the relevant information about your sample and its storage history. You should label your sample clearly and accurately, with details such as the sample name, type, source, date, and identification number. You should also keep a log or database of your sample inventory, with information such as the storage location, condition, duration, and status. This will help you track and manage your samples effectively, and avoid any confusion, errors, or losses.

6 Review the sample storage policy

The sixth step is to review and update your sample storage policy regularly. Your sample storage policy should define the roles and responsibilities, procedures and processes, and standards and criteria for storing and preserving your samples. You should review your policy periodically, to ensure that it reflects the current best practices, regulations, and requirements for your sample type and field of study. You should also update your policy as needed, to incorporate any new findings, feedback, or improvements that may affect your sample storage and preservation.