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Therefore, it is necessary to validate the stability period of these solutions individually in which these have to consume.
Storage under stricter conditions than required is normally permitted if appropriate for the substance.
However, not every standard substance or reagent is suitable for cool or cold storage (e.g. In order to minimise the impact of environmental conditions or freezing and thawing on the quality of a substance, the smallest possible containers or portions should be stored.
If this information is not stated in the text in a USP monograph for the particular solution, buffer, etc., then it is up to your lab to define this frequency.
You need to have experimental data to support your decision. The most updated information about chromatographic columns in USP can be found on the USP Chromatographic Columns Web site (sign-in required).
Inorganic Ventures can state with certainty that there are no chemical stability problems that have not been solved.