My bottle of Animal-Free Blocking Solution (5X) #15019 has become viscous and aggregated. Is this a cause for concern with functionality?

We have seen this from time to time in-house and can confirm it is not due to microbial contamination. Because the aggregates cannot be brought back into solution, we recommend spinning down the solution and using the supernatant or filtering the solution through an appropriate filter. Even after removal of the aggregates, the reagent still contains a sufficient concentration of protein for effective blocking.

Last updated: April 23, 2026