Testing & Inspection Centers

Verein für medizinische Qualitätskontrolle 

Zurich · Since 2001

Verein für medizinische Qualitätskontrolle is a ring-trial organisation that performs the legally required external quality control in laboratory medicine. The association is based at the Institute for Clinical Chemistry and is one of the two Swiss ring-trial organisations carrying out these external quality controls.

Verkehrspsychologie Graber GmbH 

Zurich · Since 2022

The core activity of the company 'Verkehrspsychologie Graber GmbH' is the preparation of traffic psychological expert opinions and assessments to examine and evaluate the fitness to drive of individuals. This includes, in particular, the assessment of performance capabilities in terms of brain functions, such as concentration, attention, visual perception and reaction ability, as well as the examination of the personal suitability for driving. The expert opinions are usually carried out on behalf of authorities when there are justified doubts about a person's fitness to drive.

Vertical Pro GmbH 

Balgach · Since 2014

The core activity of Vertical Pro GmbH is consulting, training, installation, inspection and maintenance of fall protection systems and PSAgA (Personal Protective Equipment against Falls) for companies. This also includes the sale of top-quality brands for fall protection equipment and the performance of inspections and maintenance of PSAgA systems.

Vertiskills GmbH 

Thal · Since 2024

Vertiskills GmbH provides rope-access services, training on personal fall protection (PSAgA), chainsaw courses, and inspections of fall-protection equipment and lifting gear.

VIDA Inspection GmbH 

Basel · Since 2013

The core activity of VIDA Inspection GmbH is the performance of inspections, certifications, audits and tests for various industries such as industry, automotive, oil, gas and chemistry, consumer goods, waste recycling and public institutions. This includes specific services such as: On-site inspections (Pre-shipment Inspection, Source Inspection), supervision of loading and unloading operations (Loading & Unloading/Discharge Supervision), technical inspections and acceptance tests (Technical Inspection / Factory Acceptance Test), certification and auditing, conformity assessment, and testing of products and processes. VIDA offers these services as an independent, accredited third-party provider and has offices, agents and partners in over 50 countries worldwide.

visualsky, Gregor Ming 

Hergiswil Nw · Since 2020

The core activity of VisualSky is the provision of services in the field of drone technology, specifically in the following areas: aerial and video recordings, thermographic analysis, surveillance flights, fawn rescue operations (fawn searches), and aerial photography and videography, particularly for real estate and objects.

VO2PA Sàrl 

Sion · Since 2024

VO2PA Sàrl provides outdoor performance testing that measures athletes' effort zones under real sport conditions and offers tailored coaching with individualized training plans and group sessions. Their approach uses measurements such as gas exchange, sweat analysis and muscle oxygenation, combined with a scientific focus on performance and injury prevention.

Voltaz Sàrl 

Vétroz · Since 2016

Voltaz Sàrl is an independent inspection body (OIBT) and an electrical diagnostics office. It carries out low-voltage inspections required by ordinance, including ownership-change checks, periodic inspections (1, 5, 10 or 20 years), final/reception tests, photovoltaic system checks (DC and/or AC), charging-station inspections for electric vehicles, and electrical and consumption diagnostics. Voltaz holds a general inspection authorization issued by the Federal Inspectorate for Heavy Current Installations (ESTI) and issues objective inspection reports with photographic documentation.

Weber NDT GmbH 

Mägenwil · Since 2024

The core activity of Weber NDT GmbH is the performance of non-destructive material testing, including ultrasonic testing, magnetic powder testing, penetrant testing, visual inspection and radiographic testing. The company offers a comprehensive service, from consulting to quotation to test report, and positions itself as a flexible and reliable partner for its customers.

Weishaupt Ortungstechnik AG 

Bühler · Since 2013

The core activity of Weishaupt Ortungstechnik AG is the location and control of pipelines and networks for natural gas and water, including leak detection and source line location.

Weldinspect AG 

Bonaduz · Since 2021

The core activity of Weldinspect AG is the professional consulting and execution of weld seam inspections as well as the supervision of welding work (welding supervision).

Wenzel Leckortung GmbH 

Maienfeld · Since 2020

The core activity of Wenzel Leckortung GmbH is the detection and analysis of leaks and water damage in buildings, particularly through the use of various measurement techniques and methods such as acoustic, electroimpulse-based and thermographic methods. The company also offers services such as pipe inspection, cable detection, mold analysis and water damage restoration.

X-Dos GmbH 

Röthenbach Im Emmental · Since 2003

The core activity of X-DOS GmbH is the development, manufacture and distribution of personal dosimeters, in particular 4-element TLD (thermoluminescent dosimeters), for measuring and monitoring ionizing radiation exposure in occupationally exposed individuals.

Xenometrix AG 

Allschwil · Since 2005

Xenometrix AG supplies bioassay products and related analytical services for mutagenicity, genotoxicity, endocrine activity screening and skin absorption studies. The company produces and distributes standardized test kits (including miniaturized Ames test formats such as Ames II and Ames MPF), XenoScreen endocrine receptor assays, micronucleus and cytotoxicity assays, and offers GLP and non‑GLP service analytics as well as kit components and ex‑vivo skin samples for penetration testing.

XperTox Toxicology Services GmbH 

Lugnorre · Since 2015

The core activity of XPERTOX is the provision of toxicological services, particularly in the areas of: Toxicology consulting, Risk assessment and exposure estimation, Retrieval and compilation of toxicological information, Systematic literature searches, Biocompatibility testing of medical devices according to EU MDR and US FDA regulations. The company thus offers specialized services in the field of toxicology, particularly for companies that develop or manufacture medical devices or chemical substances.

Yspekh Sàrl 

L'Auberson · Since 2022

The core activity of Yspekh Sàrl is the development, distribution and maintenance of high-tech analytical instruments, particularly Raman and XRF (X-ray fluorescence) spectrometers, as well as the performance of analyses and expertises in various fields such as environment, materials science, art and forensics. The company also provides training, consulting and services in the field of materials analysis.

ZENTREX AG 

Emmenbrücke · Since 1999

The core activity of Zentrex AG is the creation of technical expert opinions, particularly in the mobility sector, as well as the conduct of classic car valuations and auditing services. The company offers neutral and independent vehicle expert services, including damage assessments, value determinations and special expert opinions.

zweibeeimmobilien GmbH 

Mönchaltorf · Since 2013

The core activity of zweibeeimmobilien gmbh is the provision of services in the field of real estate valuation, construction consulting and quality control. Specifically, this includes the assessment and valuation of existing or under-construction properties, the conduct of condition analyses and the creation of maintenance value plans. In addition, the company also offers services such as construction supervision, construction acceptance, warranty acceptance and damage assessments.

PrüfXpert GmbH 

Zurich · Since 2025

The core activity of PrüfXpert GmbH is the performance of electrical inspections and tests, particularly in the control of electrical installations according to the Low Voltage Installation Ordinance (NIV) in the canton of Zurich and its surroundings. This includes visual inspections, measurements and functional tests of electrical systems, such as lighting and power outlets, kitchen appliances, heating systems, photovoltaic systems and electric charging columns, to ensure that they comply with the current Swiss standards and laws.

KEA Engineering GmbH 

Lostorf · Since 2025

The core activity of KEA Engineering GmbH is the performance of electrical safety inspections and tests to ensure that electrical installations and systems comply with legal requirements and function safely. This includes detailed inspection reports, safety certificates, measurement and testing protocols, as well as the handling of administrative procedures with the relevant authorities.