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The official time of the Netherlands

This clock displays the official Dutch time, as established and maintained by VSL. The time is directly linked to the national time standard and is continuously synchronised with highly accurate time sources. As such, this clock serves as a reliable reference for government, industry and society, and is fully aligned with the legal time in the Netherlands.

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News

Latest news

Read the latest news about VSL, our colleagues and partners.

VSL expands scope K999 with vacuum calibrations

With this addition, VSL aims to meet the growing demand for reliable and traceable vacuum measurements within the Netherlands and abroad.

Dosimetry audits in practice

A review of the the second ESTRO School Dosimetry Audit at VSL, about dosimetry audits, from reference dosimetry to end‑to‑end tests.

VSL Achieves Accreditation for LED Light Flicker Measurements under European Ecodesign Directives

VSL Achieves Accreditation for LED Light Flicker Measurements under European Ecodesign Directives. The National Metrology Institute is now among the first institutes worldwide capable of calibrating and validating light sources against European ecodesign requirements for flicker.

EURAMET TC-IR Annual meeting 2026

  • €225.00

Gas analyses 2026

  • €0.00

Introduction

VSL, the National Metrology Institute

VSL manages and develops national primary measurement standards on the instructions of the Minister of Economic Affairs. Our experts also provide knowledge and services worldwide, such as calibrating measuring equipmentthey conduct market-oriented scientific research.

Our mission

VSL makes measurement results from companies, laboratories and institutions directly traceable to international standards. On behalf of the Dutch government, we manage and develop the national measurement standards and make an important contribution to the reliability, quality and innovation of products and processes in business and society.

Animation

What would happen in a world without metrology?
Find out in our animation.