About Us About Us
Innovative Environmental Services

Based in the Swiss countryside, IES offers a wide variety of studies for different scientific product markets, including agrochemicals, biocides, pharmaceuticals and chemicals.


Our Services

Our specialist areas cover the fields of environmental fate, aquatic and terrestrial ecotoxicology, animal and crop metabolism, as well as analytical chemistry testing. The team members from each of our departments are able to make use of our modern laboratories and equipment. Through harnessing the knowledge and expertise of our scientific teams, we are able to perform laboratory or environmental studies tailored specifically to your registration needs. Alongside performing studies according to the latest guidelines, we are also able to offer guidance regarding suitable further testing requirements for your products.

Our Mission

Our mission is to provide and develop testing solutions to support our clients in the development, registration and stewardship of products in a prompt, flexible and cost-efficient manner.

Our Vision

Our vision is to provide premium contract research tailored to our customers’ needs through highly personalised customer service and operational excellence in delivering outstanding scientific study reports on time and through excellent communication.

Our Team

It’s the people at IES who drive our company forward. Our international team of experienced scientists and laboratory technicians perform their work with care and passion every day. Our clients can be assured that we will deliver our studies to the highest quality.

The IES management team has a proven international track record of over three decades in successfully managing teams and companies in the agrochemical and CRO fields. Our study directors and laboratory technicians have extensive and proven experience in successfully managing and conducting regulatory GLP studies for our clients across the globe. Our close-knit company structure allows members from all departments to contribute their scientific and regulatory expertise to aid with efficiently delivering quality studies fit for regulatory submission.

Our Management

Get to know the IES management team, a group of like-minded scientists and industry professionals with experience in the field of environmental fate, aquatic and terrestrial ecotoxicology, plant and animal metabolism and analytical chemistry.

Dr Stefan Höger – CEO

Stefan studied biology at the University of Constance, Germany, with a focus on developmental neurobiology, immunology, behaviour biology and ecotoxicology. Stefan has several years of experience in the CRO industry. His field of expertise covers ecotoxicology, toxicology, biodegradation, analytical chemistry and also regulatory know-how (agrochemicals, biocides, chemicals and pharmaceuticals). He previously worked as a study director, team coordinator, team leader, department head and GLP test facility manager in academia and industry. Stefan joined IES Ltd in 2014 as COO. On the 1st September 2017 Stefan was announced as the CEO of IES Ltd.

Dr Axel Mahnke – COO

Axel holds a Ph.D. in Biology from the University of Bochum and an executive Master in Business Administration (EMBA) from the EDHEC business school in Lille. Axel has over 25 years of experience in the life science industry, and has held different senior positions in scientific, strategic and operational roles at Bayer, Pfizer, Syngenta, Eurofins and Covance. Axel co-founded Onco-Logics, a reference lab specific for cancer clinical trials, translational medicine and preclinical analysis, and served as management consultant for Arcondis AG. Axel joined IES Ltd in 2019 as COO.

Dr Wolfgang Völkel – CHRO

Wolfgang has a PhD in chemistry from the Technical University of Munich, Germany, and two decades of experience as a study director for e-fate studies in contract research organisations (RCC/Harlan, IES). He has intensive experience in the design, conduct and interpretation of the full range of e-fate studies, especially adsorption/desorption studies and degradation and metabolism in soil, aquatic systems and surface water. Wolfgang’s expertise covers different types of chemicals and he has managed the delivery of testing programs which meet all aspects of regulatory requirements for product registration.

Dr Jörn Schreitmüller – CINO

Jörn studied Chemistry at the University of Ulm with a focus on analytical chemistry and organic spectroscopy. Jörn has over twenty years of experience in the CRO industry and his field of expertise covers multiple analytical areas including analytical support for ecotoxicology and toxicology, product analysis (five batch analysis and physicochemical analysis) analysis of food contact materials (migration and polymers) and medical devices, residue analysis, bio analysis and pharmaceutical analysis. Jörn also possesses in-depth knowledge of regulations in the areas of testing of agrochemicals, biocides, chemicals and pharmaceuticals. His previous roles ranged from study director to team leader and head of department as well as GLP- test facility manager (GMP and ISO 17025). Jörn joined IES in 2015 and was made Chief Innovation Officer in 2018.

Julie Masse – CMO

Julie has a broad experience in business development, mainly international B2B sales within the pharmaceutical and agrochemical markets. With almost 15 years of experience working with different types of CROs, in biology but also chemistry, she has also developed a strong know-how helping companies align their business strategy within multiple locations. Originally from France, Julie has a MEng in Biology from Polytech’Clermont-Ferrand, a MSc in Environmental Diagnostic and Management from Cranfield University in the UK, and a Master in Sales and Marketing Management from EAE in Spain. Julie Joined IES in 2022 as Chief Marketing Officer.

Our Facilities

IES’s GLP testing facilities and equipment are state of the art. All laboratories are temperature controlled and contain incubation rooms and growth chambers. Our outdoor facilities consist of greenhouses, plant metabolism/ fate-o-cosm and experimental fields.

IES Testing Facilities

Our facilities expand across our two main buildings, which are all equipped with modern scientific equipment. We are focused on ensuring that the tools at our disposal are kept to the highest standard possible, and are continually adapting our methods based on guideline developments. The temperature-controlled laboratories and offices cover a surface area of approximately 2000 sq m, the greenhouses 600 sq m and the outdoor plant metabolism/fate-o-cosm enclosures 450 sq m. Optimal infrastructure such as incubation rooms, growth and environmental chambers as well as storage facilities for samples allows the smooth undertaking of the studies.


The greenhouses are temperature and humidity controlled and separated into different compartments, allowing multiple single-crop metabolism, rotational crop or non-target plant studies to be conducted at the same time. Our newest greenhouse was opened in 2020 and allows us an extended capacity for our crop and NTP studies. Higher-tier aquatic fate studies are conducted in the fate-o-cosm facility with special enclosure systems. Since IES is located in the countryside, we have direct access to experimental fields in the proximity of the facility.

ZSH Archives

IES Ltd uses ZSH Archives, an expert in GLP, GMP and NON-GLP archiving, which offers a complete archiving service with administration and controlling of raw data, study plans and reports, wet tissues, paraffin blocks, histopathological slides and electronic data which are integrated in an electronic archive system.

  • An audit room is available for clients and authorities.
  • The rooms are temperature and humidity controlled.
  • Access is restricted to authorised personnel only.
  • The archive is equipped with state-of-the-art fire extinguisher and alarm systems.

For more information please visit www.zsh-archives.com