Strains that belong to the Freshwater Diatom Collection (designated 'FD' in UTEX number) will require a minimum of 4-weeks to grow out before shipment.
Why can't I purchase this strain?
The availability of UTEX algal strains changes on occasion; cultures may be temporarily deactivated in the online catalog if they are not considered to be healthy or if they are being cleaned for contaminants. Depending on the degree of attention needed, it may take 4-12 weeks before a culture is recovered and added back to the list of active strains.
We encourage you to explore and learn about the many diverse strains in the Collection. If a particular strain is unavailable for purchase, enter your e-mail address above to be placed on a notification list, and UTEX will contact you when it is placed back into active circulation.