General Assembly Meeting Thursday, May 5th 10:00 – 13:00

General Assembly Meeting - 2022

A virtual (Zoom) and face-to-face meeting in Paris, France

followed by Lunch

Other Logistical information to follow nearer the time




The 2020 GA meeting which normally takes place in May was postponed to November 4th due to the global pandemic. The November 4th meeting which was virtual saw 20 attendees and lasted an hour as most of the GA mandated task/decisions were addressed by way of votes prior to the meeting. Chaired by Interim Chairman Dr Bernd Friede, the meeting though brief was effective with some key decisions taken as follows:

Some highlights:

  • Executive Committee: A new Executive team was endorsed with the 2nd Vice-Chairman becoming the Chairman and Secretary General maintained to ensure continuity
  • Non-EU letter of Access Fees: Letter of Access fees and administration fees for non-EU REACH-Like regulations per substance, per legal entity for non-MARA members was established
  • Members involvement in Non-EU regulations: MARA members wishing to register substances in non-EU REACH-like regulations will only pay administration fees as they own the data generated by MARA
  • Technical update: Three dossiers updated this year lead to a new classification for manganese based UVCB’s
  • 2020 Workplan and budget were ratified in Q1, 2020 via round robin votes.


Introduction. A study was performed to assess the effect of the test item on the survival and reproduction of Ceriodaphnia dubia over an 8-Day period. The method followed that described in the OECD Guidelines for Testing of Chemicals No 211 (1998), "Daphnia magna, Reproduction Test", US EPA Short-term Methods for Estimating the Chronic Toxicity of Effluents and Receiving Waters to Freshwater Organisms (Method 1002.0), and OPPTS Ecological Effects Test Guideline, Daphnid Chronic Toxicity Test OPPTS 850.1300.

Results. The 8-Day EL*50 (immobilisation) value, based on nominal loading rates, for the parental Ceriodaphnia generation (P1) was calculated to be 57 mg/l loading rate WAF with 95% confidence limits of 32 - 100 mg/l loading rate WAF.

The 8-Day EL*50 (reproduction) value based on nominal loading rates was calculated to be 11 mg/l loading rate WAF with 95% confidence limits of 6.5 - 20 mg/l loading rate WAF.

The "Lowest Observed Effect Loading Rate" was considered to be 10 mg/l loading rate WAF on the basis that at this loading rate significantly fewer live young per adult (P<0.05) were produced when compared to the control.

*EL = Effective Loading rate

To obtain the full study, please contact:


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