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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTesting & Inspection CentersWitterswilIES AG
IES AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

IES Ltd. provides services in the field of environmental testing and research. The core activities include: Aquatic and Terrestrial Ecotoxicology, Analytical Chemistry, Metabolism and Degradation Studies, Efficacy Testing, and Risk Assessments for Non-Target Arthropods. The company also offers specialized services for difficult substances and holds a Good Laboratory Practice (GLP) certification.

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Products & services

Industry:Testing & Inspection Centers
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3.9/5

IES AG

✓ Offered7
Ecotoxicological testing for terrestrial systems
Tests on the effects of substances on terrestrial ecosystems, including pollinators, soil organisms, non-target arthropods and non-target plants according to OECD, EPA/OCSPP and JMAFF guidelines.
Ecotoxicological testing for aquatic systems
Short- and long-term studies on algae, aquatic plants, Daphnia, fish, amphibians, sediment organisms and snails, as well as endocrine disruptor studies and flow-through systems.
Efficacy testing for plant protection and biocidal products
Efficacy studies for plant protection and biocidal products, including insecticides, herbicides, fungicides, molluscicides, biostimulants, as well as biopesticides and new modes of action.
Degradation and fate studies
Studies on the behaviour of substances in soil, water and sediment, including adsorption/desorption, leaching, hydrolysis, photolysis, biodegradation and water treatment.
Metabolism and residue studies
In vitro, crop and livestock studies on metabolism, metabolite identification, comparative studies, as well as residue analysis in plants, animals, fish and skin penetration.
Analytical chemistry
Development and validation of analytical methods, HPLC, LC-MS and GC-MS analyses, metabolite identification, residue analysis, as well as physico-chemical characterisation and stability testing.
Non-GLP and non-GEP services
Early screening and development testing without GLP/GEP, including efficacy, environmental fate, aquatic and terrestrial ecotoxicology tests, as well as marketing and USP studies.
Trust & reputation

ranQ Trust Score of IES AG: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

IES AG scores 51.4 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.66.724%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.27.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.35.08%
IES AG scores 85.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.100.012%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
IES AG scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
IES AG scores 57.1 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.57.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

IES AG reaches a ranQ Trust Score of 3.9 out of 5.0 — rated «High». The rating draws, among other things, on 4.5 out of 5 stars from 2 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle4.52
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Benkenstrasse 260
4108 Witterswil

At a glance

Legal form
Corporation
UID
CHE-114.116.537
Founded
2008 · 18 years
Last commercial register change
August 12, 2026
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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