We recommend storage of Dynabeads™ at 2-8 °C in upright position to ensure that Dynabeads™ are covered with buffer (drying will reduce their performance). It is always important to re-suspend the beads completely and wash them properly before use, and this is even more important if they have been frozen. If they are frozen in storage buffer, they can normally be used afterwards without affecting their efficiency - as long as they have not been frozen and thawed several times.