High Tier Studies: from laboratory to semi-field approach


Registration schemes for plant protection products require registrants to assess the potential ecological risk of their products using a tiered approach.

Tiered approaches are the basis of risk assessment schemes. The concept of tiered approaches is to start with a simple conservative assessment and to only do additional more complex work if necessary.

The first tier includes triggers that are calculated from the Predicted Environmental Concentration (PEC) and toxicity estimates of the pesticides. If the first-tier triggers indicate that the pesticide shows a potentially unacceptable risk, consideration is given to collecting and evaluating information in the higher-tier tests (semi-field and field tests).

You can discover more in the scientific leaflet attached!

What's the difference between Laboratory tests and the High Tier approach? How ChemService's experience can help you? How about advantages and disavantages?

Let's answer these and further questions on February 1st during the webinar

High Tier Studies
from laboratory to semi-field approach

The event will be streamed on Zoom from 11:00 to 12:00 CET and will be led in English.
The event is free of charge. Limited seats only.

Register here for free!


Giorgio Freschi profilo

Giorgio Freschi - Business Development Manager

He gained his PhD in Chemical Biochemical and Ecotoxicology of Pesticides in 1996 from Cattolica University of Milan. With more than 20 years of experience in agro-chemical companies, his main areas of expertise include chemical, agrochemical, biopesticide, biocide and pharmaceutical products testing, supporting the registration dossier according to official guidelines (OECD, OPPTS, EPPO) and Good Laboratory / Good Experimental Practice (GLP/GEP).
His knowledge permits a smarter evaluation of products performance and their positioning on the market. His decades long expertise in research, registration, marketing and commercial areas supports customers in development of innovative products. He is highly expert in management and development of Contract Research Organisations (CROs) and improvement of their quality system: GXP and ISO certifications.

Marco Vighi profilo

Marco Vighi Researcher, Professor and IMDEA Consultant

Starting as research assistant at the Water Research Institute of the National Research Council in Italy, he then got a chair at the Faculty of Agriculture of the University of Milano as professor of Agricultural Ecotoxicology. 15 years later he moved to the Department of Earth and Environmental Sciences of the University of Milano-Bicocca, as professor of Ecology, Applied Ecology and Ecotoxicology and responsible of the Research Group on Ecotoxicology of the Department. He retired in November 2015 and became Principal Investigator and responsible of the Ecotoxicology Research Group at the IMDEA Water Institute (Alcalà de Henares, Spain). Now he is external consultant of the IMDEA Water Institute.

He has been member of Scientific Committees on Toxicology and Ecotoxicology of the European Commission (now SCHEER) from 1991 to date. Consultant for many international organizations (UNPD, UNEP, WHO). In 2018 he got the Environmental Education Award from the SETAC (Society of Environmental Toxicology and Chemistry). He is author of more than 200 scientific papers and books.

Benedetta Ponti profilo

Benedetta Ponti Study Director

After finishing her Master Degree in Environmental Science in 2010, Benedetta started a PhD and gained expertise in Acquatic Ecotoxicology. Benedetta has been working for ChemService since 2014 and during her career she had become Study Director in acquatic and terrestial ecotoxicology. Four years ago, as a personal hobby, Benedetta attended a beekeeper course. Over the years she has continued to follow this passion and brought those skills into her job. Currently she is in charge of honeybees and bumblebees laboratory studies (acute oral and contact toxicity and chronic 10 days toxicity) and of bee brood studies under semi-field conditions (tunnel study).

Rachele Dini profilo

Rachele Dini - Study Director 

After finishing her Master Degree in Biodiversity and Biological Evolution in 2009, Rachele started working for ChemService in 2010 and during her career she had become Study Director in acquatic and terrestial ecotoxicology. Two years ago, she attended a non-target-arthropods formation course in Scotland. In these years she has continued to specialise in terrestrial and NTA studies. Currently she is in charge of a terrestrial (collembolan, hypoaspis and worms) and non-target-arthropods studies (laboratory, extended and aged residues).

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