Not all UTEX strains can be grown in liquid medium and some cannot be cultured to high density (See Important Considerations below). Although efforts are made to minimize contamination, a low-level of bacteria is likely to be present in bulk cultures, even when inoculated from axenic stocks. We will indicate to the requester whether a bulk culture can be grown to a reasonably high density and will provide an estimated shipping date within two weeks of receiving an order.


  • Since UTEX does not maintain algal cultures in large volumes, each bulk culture is inoculated and grown when an order is placed and will take a minimum of 4 weeks before delivery. UTEX will notify customers by email if their bulk culture(s) will be sent out sooner or later than originally estimated.
  • Strains that are maintained in cryopreservation only (designated 'cryo only'), are not available in bulk volume sizes due to the small starting inoculum and long grow-out period.