The Collagen Buffer is developed to ease the neutralization process of CELLINK’s Coll 1 Lyophilizate, Coll 1 Solution, ColMA Lyophilizate, and ColMA Solution. The product contains a pH buffer and salts to make your final collagen based bioink ideal for cell culture, and a pH indicator (phenol red) to make neutralization easy. Use according to the Neutralization and Printing protocols for Coll 1 Solution and ColMA Solution, found below.