What NMi Group does

NMi Group is a Dutch-headquartered Advisory, Testing, Inspection, Certification, and Calibration (ATICC) services platform with origins dating to 1873 as the Dutch national calibration service (Ijkwezen). The company provides testing, inspection, certification, and calibration services to over 7,000 clients in regulated industries including energy and utilities, technology, manufacturing, defence, transport, and life sciences, helping manufacturers achieve and maintain regulatory compliance and measurement accuracy across the product lifecycle — from development through market approval, production, commissioning, and in-life calibration. Headquartered at the Technical University of Delft's innovation campus, the group operates approximately 300 employees across nine sites in the Netherlands, the UK, and Germany.

The platform is anchored by the legacy NMi brand and the "NMi Blue Seal" mark — a recognised global benchmark for legal metrology — and has been extended through a disciplined buy-and-build programme that has added specialist capabilities since 2020: Young Calibration, Chamois Metrology, Avon Dynamic Calibration, TrustCB (Common Criteria cybersecurity certification), Minerva Metrology and Calibration, ExVeritas (hazardous-environment ATEX/IECEx), ETS (EMC testing), Phoenix Testlab (renamed NMi Testlab, EMC/radio/battery/automotive), and TechnoLab GmbH (environmental simulation, defence/aerospace). Differentiated offerings include the E-mark SelfScan self-service compliance tool and the NMi Academy knowledge platform. Core technical assets are formal accreditations rather than software: ISO/IEC 17025, 17065, and 17021-1 designations, plus Notified Body status and jurisdiction-specific recognitions (UKAS, IECEx, ATEX, UKCA, FCC, KBA, MIC).

Revenue is generated through professional services fees for testing, calibration, certification, advisory, and training engagements, delivered via direct enterprise sales targeting regulated buyers. The company is majority-owned by Bridgepoint Development Capital V following the September 2025 secondary buyout from Levine Leichtman Capital Partners, with management reinvesting alongside. Revenue figures are not publicly disclosed.

Name

NMi Group

Legal name

NMi Group

Website

https://nmigroup.com

Company type

Private

Founded year

1873

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

NMi Group is a Dutch-headquartered ATICC services platform founded in 1873, providing testing, inspection, certification, and calibration to over 7,000 clients across energy, technology, defence, manufacturing, transport, and life sciences sectors in Europe.

Ownership category

akta.pro rank

Product category

Testing, Inspection, Certification, and Calibration Services

NAICS

Testing Laboratories and Services (54138), Other Scientific and Technical Consulting Services (54169), Testing Laboratories and Services (541380)

SIC

Services-Testing Laboratories (8734), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)

akta.pro primary industry

Third-Party Certification, Code Compliance & Regulatory Inspection (ASME/API/ISO) (EUAEAHAN)

akta.pro secondary industries

Inspection Readiness & Regulatory Authority Support (FDA/EMA/MHRA) (HLAGAKAF), Safety, Compliance & Regulatory (OSHA/HSE/GxP) Certifications (EDAAANAJ)

Keywords

• Metrology certification
• Calibration services
• Testing inspection
• EMC compliance testing
• Product certification services

Headquarters

HQ city

Delft

HQ country

Netherlands

HQ region

Europe

Offices5 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Testing and Certification Services: Testing, inspection, and certification services for manufacturers bringing new technologies to market in regulated environments. Services include EMC, radio, battery, environmental, and product safety compliance testing.
2. Calibration Services: In-life calibration services ensuring products remain compliant and accurate throughout their use, including complex calibrations, verification services, and compliance assurance. Over 90,000 calibrations performed annually.
3. Advisory Services: Industry experts provide insights into regulatory standards and requirements to ensure first-time success during development phase through to testing and approval. Over 100 trainings for manufacturers and government per annum.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels6 records

Core offering

NMi Group provides premium Advisory, Testing, Inspection, Certification, and Calibration (ATICC) services to manufacturers and authorities, ensuring measurement accuracy, regulatory compliance, and market access for products across regulated industries. Its portfolio spans EMC, radio, battery, environmental, mechanical, analytical and product safety testing; legal metrology certification (MID/NAWI, OIML); Common Criteria and SESIP security certification; hazardous environment certification (ATEX, IECEx, UKCA); dimensional, pressure, thermal and electrical calibration; and regulatory advisory and training services delivered through accredited laboratories in the Netherlands, Germany, the UK, and Taiwan.

Product overview

NMi Group operates as an ATICC (Advisory, Testing, Inspection, Certification, and Calibration) platform providing mission-critical services across the product value chain. The portfolio includes core brands NMi and NMi UK for certification and metrology, complemented by acquired calibration specialists (Young Calibration, Avon-Dynamic, Chamois Metrology, Minerva Metrology), certification bodies (TrustCB for Common Criteria security, ExVeritas for hazardous environments), EMC testing (ETS, NMi Testlab), and environmental/analytical testing (NMi TechnoLab). NMi Academy provides training and education, while E-mark SelfScan offers self-service compliance tools. The platform enables manufacturers to access integrated services from development through market approval, production, commissioning, verification, calibration, and repair.

Differentiator

Problem solved

Functional benefit

Brands

• NMi Certin: Certification and metrology institute providing MID/NAWI, MIR/NAWIR, and OIML certificates for UK and EU market access
• NMi UK (TIC) Ltd.
• Young Calibration
• Avon Dynamic
• Chamois Metrology
• TrustCB
• Minerva Metrology and Calibration
• ExVeritas
• ETS
• NMi Testlab
• NMi TechnoLab
• NMi Academy

Products and services

• NMi Certification and Metrology Services
• NMi UK (TIC) Ltd. Certification Services
• TrustCB Security Certification
• ExVeritas Hazardous Environment Certification
• NMi Testlab (Phoenix Testlab) Testing Services
• NMi TechnoLab Environmental and Mechanical Testing
• ETS EMC Testing and Advisory
• Young Calibration Services
• Avon-Dynamic Calibration Services
• Chamois Metrology Calibration Services
• Minerva Metrology and Calibration Services
• NMi Academy Training and Education
• E-mark SelfScan Compliance Tool

Quantifiable outcome

• Over 90,000 calibrations per annum delivered
• +3 more outcomes

Named customers8 records

Segments6 records

Ideal customer profiles5 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Nine partnerships are on record, tiered core.

• TechnoLab GmbHcoreStrategic or Co-development Partner · 12 May 2026NMi Group signed an agreement to acquire TechnoLab GmbH, a Berlin-based ISO/IEC 17025 accredited testing laboratory with over 30 years of expertise in environmental simulation, analytical testing, and mechanical testing. TechnoLab serves a diversified customer base across defence, aerospace, automotive, rail and consumer goods throughout Europe.
• Phoenix TestlabcoreStrategic or Co-development Partner · 16 September 2025NMi Group acquired Phoenix Testlab, a leading German testing and certification body specializing in EMC, radio, battery, environmental, and product safety compliance. Phoenix Testlab operates a state-of-the-art facility in Blomberg, Germany with over 30 years of experience and partnerships with global automotive OEMs and electronics manufacturers.
• Minerva Metrology and CalibrationcoreStrategic or Co-development Partner · 1 January 2024Acquired in 2024 to further strengthen NMi Group's presence in the Benelux region. Specialising in premium calibration services with expertise in high-end pressure metrology since the 1980s.
• TrustCBcoreStrategic or Co-development Partner · 1 January 2023Acquired in 2023 to solidify NMi Group as the premier certification services provider for digitally integrated and smart devices. Premier global Certification Body for Common Criteria (CC) and CC-based certification, one of only four authorized CBs for EAL7 certification worldwide.
• Avon Dynamic CalibrationcoreStrategic or Co-development Partner · 1 January 2022Acquired in 2022 to add meaningful scale to NMi Group's existing UK platform. A top-tier UKAS Accredited Calibration and Dimensional measurement specialist in Southwest England.
• Chamois MetrologycoreStrategic or Co-development Partner · 1 January 2021Acquired in 2021 to add measuring equipment solutions. Based in Southam, Warwickshire, providing ISO 17025:2017-certified calibration (UKAS Laboratory 0822) and Additel product distribution.
• Young CalibrationcoreStrategic or Co-development Partner · 1 January 2020Acquired in 2020 to strengthen NMi Group's UK presence. Provides world-class calibration and thermal fluid testing services to industries including automotive, defence, biomedical and aerospace.
• ETS (EMC Testing Services)coreStrategic or Co-development PartnerUKAS, FCC, and VCA accredited independent EMC testing and advisory provider, delivering high-quality EMC testing, certification, calibration, and troubleshooting. Has supported clients across multiple industries for over 25 years.
• ExVeritascoreStrategic or Co-development PartnerSpecializes in product and system certifications for hazardous environments, holding UKAS, DANAK, and IECEx accreditations. Offers ATEX, IECEX, and UKCA certifications alongside training and inspection services.

Scale indicators9 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Trescal: Global pure-play calibration services provider headquartered in France. Highly comparable as a similarly-sized, calibration-focused TIC specialist serving regulated industries with multi-country accredited laboratories.
• Kiwa: Dutch-headquartered TIC group operating across testing, inspection, certification, and training. The closest geographic and capability peer, with overlapping accreditation-based certification services and shared Dutch heritage.
• DEKRA: German-headquartered TIC organization strong in automotive, product safety, EMC, and certification. Direct overlap with NMi via Phoenix Testlab's automotive EMC/radio and ExVeritas's ATEX/IECEx hazardous-location certifications.
• Element Materials Technology: Global testing and certification platform for materials and products, also previously backed by Bridgepoint. Highly relevant peer given shared sponsor relationship and comparable TIC operating model.
• Applus+: Spanish-headquartered TIC group serving energy, automotive, and industrial clients. Overlaps with NMi in industrial inspection, EMC/product testing, and accredited laboratory services.

Broad incumbents

• Bureau Veritas: Global TIC leader (€5B+ revenue) covering marine, commodities, construction, industry, and certification. Overlaps with NMi in product testing, certification, and industrial inspection but at vastly greater scale and breadth.
• SGS: World's largest TIC company by revenue, offering testing, inspection, and certification across virtually every industry. Competes with NMi in product certification and laboratory testing for regulated manufacturers.
• Intertek: Global TIC provider serving consumer goods, industrial, and energy markets. Overlaps with NMi's product safety, EMC, and calibration services for manufacturers seeking market access.
• TÜV Rheinland: German-origin global TIC group with strong industrial and product certification franchise. Direct competitor in EMC, product safety testing, and accredited certification services.
• TÜV SÜD: Global TIC services group with deep German roots. Competes with NMi across product testing, EMC, certification, and industrial inspection, with broader geographic reach and brand recognition.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/nmigroup

Compliance21 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Subsidiaries11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A2 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about NMi Group