I need to freeze dry many plant samples. After 12 hours they did not dry in a freeze dryer. What should I do for fast freeze drying?
Dear Vahab,
Plant tissue that is freeze dried in a 1L freeze dry
system using a 120 ml flask can take less than 24 hours to finish the
lyophilization process. However, another user that is lyophilizing plant samples in
900 ml flasks on a 6L freeze dry system may need to wait over 48 hours until the
freeze dry process is complete. Similarly, freeze drying solvents can take less than
24 hours while using a 40 ml on a 2.5L freeze dry system, but over 24 hours when
using a 120 ml flask on a 12L Cascade freeze dry system.
please refer this article
https://www.laboratory-equipment.com/file_library/freezedryarticle_102312120844.pdf
Thank you very much for very nice response
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