How do I know the lot no. of an ampoule and what does it mean?
The preservation date on the inner vial is the lot identification. Viability and authenticity of each strain is routinely tested at the DSMZ so that ampoules that are several years old can be used without problems. Actively growing cultures are freshly prepared before despatch.
Which batch number/culture transfers in the sense of lab standards are DSMZ ampoules or actively growing cultures?
Our freeze-dried microorganisms in glass ampoules are batch no. zero, actively growing cultures are batch no. one.