New ISO/NEN standard coming in 2026

New ISO/NEN standard coming in 2026

Starting January 1, 2026, laboratories in the Benelux region will face a major shift in wastewater analysis with the introduction of ISO 20236. This new regulation, ISO 20236, mandates that all wastewater be analyzed using a TOC/TNb analyzer. It replaces the current method of measuring wastewater through Chemical Oxygen Demand (COD).

But what exactly does ISO 20236 entail? And what are the implications for laboratories and their analytical processes?

We have written a complete article covering everything you need to know about this new standard.