Last revised as of: February 2013
Reference Toxicant Quality Control Charts

AquaTox Research staff routinely conducts reference toxicant tests on a monthly basis to assess the quality of test stocks used in the conductance of toxicity tests with chemical products and environmental samples. Each of the charts presented below reflect results generated over the past approximate 12 to 18 months. Warning limits on each graph represent +/- 2 standard deviations of the mean of the values appearing on each graph. Reference toxicant identity and chart statistics are shown to the left of each graph.


Fathead minnow (48-hr) acute LC50s
Reference Toxicant: Sodium Chloride
Mean=8,340 mg/L; LCL=7,420; UCL=9,259

reference toxicant quality control chart for fathead minnow acute tests with NaCl

Fathead minnow (7-day) cIC25s (dry weight)
Reference Toxicant: Sodium Chloride
Mean=3,591 mg/L; LCL=2,168; UCL=5,015

reference toxicant quality control chart for fathead minnow chronic tests with NaCl

Ceriodaphnia dubia (48-hr) acute LC50s
Reference Toxicant: Sodium Chloride
Mean=1,562 mg/L; LCL=1,071; UCL=2,052

reference toxicant quality control chart for Ceriodaphnia dubia acute tests with NaCl

Ceriodaphnia dubia (7-day) IC25s (reproduction)
Reference Toxicant: Sodium Chloride
Mean=845 mg/L; LCL=274; UCL=1,416
reference toxicant quality control chart for Ceriodaphnia dubia chronic tests with NaCl

Microtox-Vibrio fischeri (15-min) EC50s (luminesence)
Reference Toxicant: Zinc sulfate 7-hydrate
Mean=3.59 mg/L; LCL=2.77; UCL=4.41

reference toxicant quality control chart for Microtox acute tests with Zinc sulfate 7-hydrate