Lab accreditation assessors to be trained on Ceriodaphnia toxicity test during 3-day workshop

Assessors who audit environmental laboratories in California will be trained on standardized laboratory practices, test requirements and data quality standards for the Ceriodaphnia dubia survival and chronic reproduction test during a three-day workshop scheduled for April 28-30, 2025 that will be co-presented by SCCWRP.

The workshop, which is part of an ongoing series of California Environmental Laboratory Accreditation (ELAP) assessor training workshops, comes in response to recommendations developed by an expert science panel in 2023 for how to improve the quality and consistency of the C. dubia toxicity test. Among the panel’s recommendations was training for all parties, including State assessors.

Already, the California Association of Sanitation Agencies (CASA) hosted a webinar in late 2023 to help agencies and ELAP-accredited laboratories enhance their performance with the C. dubia test.

SCCWRP, which kicked off the ELAP assessor training series in 2023, so far has offered trainings for a suite of commonly used fish bioassay toxicity tests, as well as how to measure PFAS in drinking water and environmental matrices.