Custom Premix Selecting "Custom Premix" option means that all of the beads you have chosen will be premixed in manufacturing before the kit is sent to you.
D-Desthiobiotin provides a gentle elution of Strep•Tag® II proteins from the biotin-binding site of Strep•Tactin® resins. The D-Desthiobiotin is offered as a lyophilized powder for preparation of elution buffer.