Chronic Ceriodaphnia dubia (water flea)
| Study No. | Year | Test Endpoint | Assigned/Proficiency Value (%) | Acceptance Limits (%) | AquaTox Research Reported Value (%) | Decision |
|---|---|---|---|---|---|---|
| 41 | 2021 | NOEC/SRV NOEC/REP IC25/REP |
25 25 27.7 |
12.5 – 50 12.5 – 50 16.2 – 39.2 |
50.0 25.0 24.6 |
Acceptable Acceptable Acceptable |
| 40 | 2020 | NOEC/SRV NOEC/REP IC25/REP |
25 25 26.5 |
12.5 – 50 12.5 – 50 15.1 – 37.9 |
50.0 25.0 33.1 |
Acceptable Acceptable Acceptable |
| 39 | 2019 | NOEC/SRV NOEC/REP IC25/REP |
25 25 27.0 |
12.5 – 50 12.5 – 50 17.9 – 36.2 |
50.0 25.0 38.6 |
Acceptable Acceptable Not Acceptable* |
| 38 | 2018 | NOEC/SRV NOEC/REP IC25/REP |
50 25 25.3 |
12.5 – 100 12.5 – 50 7.04 – 43.6 |
25 12.5 20.4 |
Acceptable Acceptable Acceptable |
| 37 | 2017 | NOEC/SRV NOEC/REP IC25/REP |
50 25 32.2 |
25 – 100 6.25 – 50 <6.25 – 64.0 |
50 6.25 13.1 |
Acceptable Acceptable Acceptable |
*USEPA DMRQA officer did not require a test repeat.