Toxicity Testing

Toxicity Testing 

Aquatic Bioassay’s toxicity testing laboratory has been the most successful lab on the West Coast since 1988 with clients located throughout the western region of the United States and several Pacific Rim countries.

  • Our clients range from local municipal and state agencies to Fortune 500 corporations.
  • We manage a rigorous Quality Control program that ensures our testing results meet all quality assurance criteria and are scientifically defensible
  • We are ELAP (No. 1907) certified by the State of California and have been since 1988
  • We are fully equipped to perform all marine and freshwater acute or chronic toxicity tests on hazardous wastes, wastewater, drilling fluids, or benthic sediments in compliance with NPDES, ASTM, USEPA/COE, or DOHS regulations.
  • Our toxicity testing capabilities include:

Freshwater Bioassays

Test Organism Age Test Duration
Acute  (EPA-821-R-02-012)
   Adult fathead minnow (Pimephales promelas) 96 hours
   Juvenile fathead minnow (Pimephales promelas) 1 to 14 days 24-96 hours
   Rainbow Trout (Oncorhynchus mykiss) 15 to 30 days 96 hours
   Water flea (Ceriodaphnia dubia) < 24 hrs 24-96 hours
   Water flea (Daphnia magna) < 24 hrs 24-96 hours
   Amphipod ( Hyalella azteca) 8 to 10 days 24-96 hours
Chronic (EPA-821-R-02-013)
   Juvenile fathead minnow (Pimephales promelas) <24 hrs 7 days
   Water flea (Ceriodaphnia dubia) <24 hrs 7 days
   Hyalella azteca 8 to 10 days 7 days
   Green Alga (Selenastrum capricornutum) 4 to 7 days 96 hours
Sediment (EPA 600/R-99/064)
    Amphipod ( Hyalella azteca) 10 days
    Midges (Chironomus sp) 10 days

Saltwater Bioassays

Acute   (EPA-821-R-02-012)
   Shrimp (Americamysis bahia) 1 to 5 days 24-96 hours
   Shrimp (Holmesimysis costata) 24-96 hours
   Topsmelt (Atherinops affinis) 9 to 15 days 24-96 hours
   Silversides minnow (Menidia beryllina) 9 to 14 days 24-96 hours
Chronic  (EPA-600-R-95-136 & EPA821-R-02-014 )
   Abalone (Haliotus rufescens) 48 hours
   Urchin fertilization (Strongylocentrotus purpuratus) 20 minutes
   Urchin development (Strongylocentrotus purpuratus) 48 hours
   Sand dollar fertilization (Dendraster excentricus) 2 hours
   Sand dollar development (Dendraster excentricus) 48 hours
   Giant Kelp (Macrocystis pyrifera) 48 hours
   Topsmelt (Atherinops affinis) 9 to 15 days 7 days
   Silversides minnow (Menidia beryllina) 7 to 11 days 7days
   Shrimp (Americamysis bahia) 7 days 7days
    Mussel (Mytilus galloprovincialis) 48 hours
    Oyster (Crassostrea gigas) 48 hours
Sediment  (EPA 600/R-94/025)
    Amphipod (Eohaustorius estuarius) 10 day
    Mussel sediment water interface (Mytilus galloprovincialis) 48 hrs

Hazardous Waste Bioassays (Calif. DOHS Title 22)

   Fathead minnow (Pimephales promelas) 96 hours
   Rainbow Trout (Oncorhynchus mykiss) 96 hours

Freshwater & Marine Bioaccumulation Studies

   Please contact us for our species list and capabilities

USACE Dredge Bioassay & Bioaccumulation Studies

   Please contact us for our species list and capabilities

Toxicity Identification Evaluations (TIEs)

    We conduct TIEs on most test organisms. Please contact us for more information.
Test Results Turn Around Times (TATs)
    Acute tests = 10 working days
    Chronic tests = 14 working days
All samples must be held at 4° C in the dark
Sample Holding Times
    Water = 36 hours
    Stormwater = up to 72 hrs if allowed by the permitting agency
    Sediment = 14 days
Please contact us for:
    For our most current prices
    To request sample containers