IES Ltd is an independent and privately owned GLP-certified contract research organisation (CRO) based near Basel in Switzerland. We support our international clients by offering scientific studies to not only ensure the safety of the tested products, but also to confirm that the products adhere to the applicable international environmental guidelines.


IES Ltd is highly experienced in conducting various kinds of metabolism studies, including the identification of unknown metabolites.

Ecotoxicology - Terrestrial

IES Ltd offers a complete spectrum of bee, NTA and NTP laboratory and field studies and is also specialised in conducting higher-tier studies.


IES Ltd's key expertise includes the entire spectrum of laboratory and higher-tier environmental fate studies, using radiolabelled and non-radiolabelled test items and substances.


The development and validation of analytical methods is the key to all complex studies. Analytical techniques such as TLC, HPLC, GC-MS and LC-MS/MS are standard.


IES Ltd’s scientists have extensive experience in designing and conducting non-GLP studies to provide environmental fate data on early-stage research and development compounds.

Ecotoxicology - Aquatic

IES Ltd conducts a wide range of studies in the area of aquatic ecotoxicology which are required for regulatory studies on industrial chemicals, agrochemicals, biocides, and veterinary and human pharmaceuticals worldwide.

Agenda 2020

03.05 – SETAC Europe, Dublin

02.07 – Online Workshop “How to identify Endocrine Disrupting Chemicals” – Akademie Fresenius

16.08 – Annual meeting of the American Chemistry Society, “Moving Chemistry from Bench to Market”, San Francisco CA

19.10 – Annual Biocontrol Industry Meeting, Basel

11.11 – Chemspec Europe, Cologne

15.11 – SETAC North America, Fort Worth


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