Testing & Inspection Centers

Angstrom Atomic Level Structures Sàrl 

Lausanne · Since 2025

Angstrom Atomic Level Structures Sàrl provides products and services for atomic-level structural characterization of crystalline and amorphous molecular solids from powders using solid-state NMR, advanced computational methods, and machine learning. Offerings include solid-state NMR spectra, polymorph detection, surface and interface structure analysis, structure validation and determination, DFT calculations of NMR parameters, and machine-learning chemical-shift predictions.

MFG-Umwelt AG 

Baar · Since 2025

MFG-Umwelt AG provides services for identifying and managing building-related hazardous substances. The company performs analyses (asbestos, PCB, PFAS, formaldehyde, mould, VOCs/SVOCs, heavy metals, etc.), air and clearance measurements, technical site/project management, independent expert assessments, regulatory reporting and emergency-response support.

Expertech sàrl 

Dombresson · Since 2025

Expertech sàrl provides inspections and expert assessments of electrical installations and issues safety reports.

KALLMANN Engineering GmbH 

St. Gallen · Since 2025

KALLMANN Engineering GmbH provides services in project engineering, instrumentation and the design, installation and maintenance of electrical and electronic control and regulation systems for process and energy automation. The company also offers cloud services and IoT solutions, as well as calibration, commissioning, maintenance and training for measurement and control technology.

EPB Elektro-Kontrollen GmbH 

Schlossrued · Since 2025

EPB Elektro-Kontrollen GmbH performs periodic electrical inspections, acceptance checks and device testing. The company issues safety certificates (SiNa) and defect reports, provides attestations for photovoltaic installations (Pronovo), conducts sampling inspections for energy utilities, and offers electrical and safety consultancy with ESTI-authorised control personnel.

Voltimo GmbH 

Eschlikon Tg · Since 2025

Voltimo GmbH operates as an independent inspection body under Art. 26a of the Low-Voltage Installation Ordinance, performing legally required inspections of electrical installations and issuing the safety certificate for submission to the network operator. Services include periodic inspections, acceptance tests, inspections on property transfer, certification of photovoltaic systems (up to 100 kW), appliance testing, and consulting on low-voltage installations.

TALPA-Inspection AG 

Zürich Eth-Hönggerberg · Since 2025

TALPA-Inspection AG develops sensor-based measurement systems and inspection methods for non-destructive detection of corrosion in reinforced concrete, focusing on retaining wall assessments and integration with robotic platforms. The company also provides TALPA-Analytics, AI/ML algorithms to process electrochemical measurements into corrosion probability assessments, and offers consulting as well as hardware and software solutions for on-site data acquisition.

Mirella Manser Spürhundearbeit und Projekte GmbH 

Root D4 · Since 2025

Mirella Manser Spürhundearbeit und Projekte GmbH conducts professional detection-dog operations on construction and clearance sites to locate nesting hedgehogs and hedgehog nests and, when necessary, recover them. The company works for developers and construction management, coordinates handover of cleared areas for vegetation removal, transfers rescued hedgehogs to the Igelzentrum Zürich or authorised regional centres, and provides written documentation and presentations on request.

Serena Elektrokontrollen GmbH 

Erlenbach Zh · Since 2025

Serena Elektrokontrollen GmbH performs electrical inspections and issues safety certificates for electrical installations. Services include periodic inspections, acceptance checks, safety certificates for property transfers, expert assessments, thermography, lightning protection checks, sample inspections and network quality analysis.

UnfallExperten Team GmbH 

Engwilen · Since 2025

UnfallExperten Team GmbH produces independent, neutral accident reports and professional vehicle valuations. Services include damage management, insurance consulting, workshop coordination and technical assessments for insurers, businesses and private clients.

GRU MASTER Sagl 

Lugano · Since 2025

GRU MASTER Sagl provides inspections, technical assessments, consultancy and training for lifting equipment and workplace safety, including initial and periodic tests of cranes and hoists, expert reports, SUVA-compliant documentation support, on-site assistance and operator training.

Schadstoffscreening.ch GmbH 

Scharans · Since 2025

Schadstoffscreening.ch GmbH conducts investigations and analyses of construction-related hazardous substances in buildings planned for renovation, conversion or demolition. Services include sampling, material and dust analyses, reporting and handling of disposal declarations for contaminants such as asbestos, PCB, PAHs, heavy metals and radon; the company is listed with relevant industry bodies and recognized as a pollutant diagnostician.

Danem Test and Certificate AG 

Baar · Since 2025

Danem Test and Certificate AG provides testing and certification services for ATEX, IECEx and CE conformity. The company states that its laboratory continues to operate and accepts consultation and certification requests via email or phone.

STD Seibold GmbH & Co. KG, Leonberg (DE), Zweigniederlassung Zürich 

Zurich · Since 2026

International Security Organization, ISO-SEC 

Rietheim · Since 2026

International Security Organization, ISO-SEC is a nonprofit organization that develops and administers security standards, accreditation and certification processes for the private security industry. It offers accredited courses and registered badges, protocol-conformity certification and curriculum approval, membership services, course and certificate verification tools, and maintains a public protocols library.

VIRET Sàrl 

Crissier

VIRET Sàrl performs inspections of electrical installations under the OIBT and inspection/testing of electrical appliances and portable tools according to applicable standards. The company also provides photovoltaic certification up to 100 kVA (Pronovo) and operates as an independent control body.

Advanced NDT Solutions, Mario Vrbat 

Eggersriet · Since 2022

The company's core activity is the performance of non-destructive material testing and the provision of services in the field of welding technology. This includes, in particular, the application of methods such as ultrasonic testing, magnetic powder testing, penetration testing, radiographic testing (X-ray) and visual inspection, as well as the performance of welder testing and the creation of manufacturing documents and product documentation.

AEROSPACE NDT SERVICES Sàrl 

Cointrin · Since 2012

The core activity of Aerospace NDT Services Sàrl is the performance of non-destructive testing (NDT) on aircraft, particularly business jets. The tests are carried out using various methods such as ultrasound, eddy current, magnetic powder, X-ray and penetrant. The company offers these services worldwide and specializes in the inspection of aircraft during maintenance and after accidents.

AGRARIA Sàrl 

Vésenaz · Since 2021

AJ Elektrokontrollen GmbH 

Bettmeralp · Since 2023

The core activity of AJ Elektrokontrollen GmbH is the performance of electrical inspections and tests for various types of buildings, including apartment buildings, single-family homes, condominiums, commercial and industrial buildings. In addition, the company offers acceptance inspections and certification of photovoltaic systems.