quality test organisms. The organisms we use in testing do not have to undergo the stress of shipping. Hydrosphere has conducted studies that show in-house organisms are 25-36% heartier than organisms that have undergone the stress of packaging and shipping.
Another added benefit is that we can set up a bioassay test at any time.
Freshwater test organisms that we routinely culture include:
- Invertebrates – Ceriodaphnia dubia, Daphnia pulex, Daphnia magna
- Vertebrates – Pimephales promelas, Cyprinella leedsi
- Amphipod – Hyalella azteca
- Midge Fly Larvae – Chironomus dilutus (formerly C. tentans)
- Freshwater alga – Pseudokirchneriella subcapita (formerly Selenastrum capricornutum), is maintained as a food source for the freshwater invetebrates and as test organisms in algal growth and inhibition tests.
Saltwater test organisms that we routinely culture include:
- Invertebrates – Americamysis bahia (formerly Mysidopsis bahia)
- Vertebrates – Menidia beryllina
- Amphipod – Leptocheirus plumulosus
- Saltwater Algae – Dunaliella tertiolecta is maintained and used as a test organisms in algal growth and inhibition tests.
- Purple Sea Urchin – Arbacia punctulata are kept in long term holding
Occasionally our testing needs exceed what we can produce in-house. In these cases commercial suppliers are used. US EPA guidelines for holding and acclimating organisms are followed when using organisms from a commercial supplier.