What are the best lab formulated freeze drying medium/buffer for bacteria and yeasts?

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Arizaldo Castro

You can try commercial freeze drying solutions. If not affordable, use of glycerol in the preservation set-up is considerable.

Francisco Javier Alvarez

You can try 1:1 mix with 30% glycerol (sterile). That has always worked for me in different labs.

Pasindu Chamikara

I think best one is the sterile glycerol.