We have experience in addressing special questions in environmental risk assessment with acute and chronic laboratory tests with non-standard species and/or non-standard design.

Possible test species are for example:

 Insects:

• Mayflies (Ephemeroptera; e.g. Cloeon dipterum)
• Caddisflies (Trichoptera; e.g. Hydropsyche incognita, Lasiocephala basalis, Rhyacophila spp.)
• Phantom midges (Chaoboridae; e.g. Chaoborus obscuripes, Chaoborus crystallinus)
• Non-biting midges (Chironomidae)
• Water bugs (e.g. Notonecta glauca)

Crustacea:

• Isopods (e.g. Asellus aquaticus)
• Amphipods (e.g. Gammarus pulex, Gammarus roeseli, Gammarus fossarum, Crangonyx pseudogracilis, Hyalella azteca)
• Phyllopods (e.g. Daphnia longispina, Daphnia pulex, Simocephalus sp., Chydorus sp.)
• Copepods (different species depending on season)
• Decapods (e.g. Neocaridina sp.)

Rotifera:

• depending on season, e.g.
• Brachionus spp.
  
• Keratella quadrata
• Lecane spp.

Mollusca:

• Gastropoda (e.g. Potamopyrgus antipodarum, Lymnea stagnalis)

 Oligochaeta:

• Naididae

Algae:

• Special freshwater species are available on request, e.g.
• Ankistrodemus falcatus
• Aphanothece clathrata
• Chlorella vulgaris
• Chroococcus minutus
• Nitzschia palea
  
• Scenedesmus obliquus