What are the storage requirements for Sep-Pak bulk material, and is there a shelf life? - WKB113541

ENVIRONMENT

• Sep-Pak

ANSWER

These bulk materials can be stored at ambient temperature in their original containers. These materials are not hygroscopic, so closing the containers immediately after use is sufficient to prevent adsorption of water, which could alter chromatographic response factors. There is no need to have desiccant or to purge these containers with inert gases such as argon or nitrogen. Finally, there are no special requirements for light blocking.

We have not assigned an expiration date/shelf life for these bulk materials when stored in their original containers. Conceptually, these bulk materials cannot undergo degradation mechanisms due to microbial action, hydrolysis, or oxidation when stored and handled appropriately in their original containers. However, upon packing these bulk materials into devices such as columns, Sep-Pak cartridges, or plates, the materials will be subjected to chemical environments determined by the end user of these devices. Consequently, it is the policy of Waters Corporation to consign the task of expiration dating to the device end user.  Specifically, Waters Corporation strongly recommends that the expiration date be set by the end user of devices packed with these bulk materials based on the details of their application. Waters does provide a lot-specific Certificate of Analysis with a QC acceptance date as a point of reference at the customer’s request. Good practice dictates that chemicals and reagents (including devices) stored beyond five years should be re-evaluated for use or replacement before continued use. It is advised that the end user establish a protocol for re-evaluation after a pre-determined time period set by the end user.

ADDITIONAL INFORMATION