Hemin and PenStrep stock solutions are used for complementation of synthetic and complex LEXSY cultivation media.
Please note:
- Hemin is essential for growth of LEXSY cultures.
- Addition of Pen-Strep prevents growth of bacterial contaminations.
- Following addition of these components the media can be used within two weeks.
For specific instructions please, consult the particular media datasheets. - If the completed media are to be used after this period, appropriate amounts of additives have to be re-added.
Please contact expression@jenabioscience.com with questions or inquiries.

