The PIKA Approach
Conventional yeast banks are propagating their yeast and then let them settle until they are inactive. Then the yeast is shipped in its resting phase, which means it is "old" yeast. For you as a brewer, this means: You have to work and wait until these yeasts “wake up” and re-start into proliferation.
We at PIAK Weihenstephan have developed a better method and ship pure liquid yeast in the proliferation phase – for its protection with overnight express and cooled, of course. Your advantage: The yeast can be transferred direct into the wort and starts its proliferation immediately without any delay.