What's NPR 1813 and NEN 1335 certification?

A desk chair is indispensable at the office or at home if you work from home. There are regular desk chairs for a low price, and there are health and safety-certified desk chairs. These desk chairs cost more, but there's a very important reason for that. They have a health and safety certification because they meet strict requirements. The requirements mostly concern the adjustability of the different parts. With a health and safety-certified desk chair, you can adjust the seat and backrest. In addition, some models have adjustable armrests and lumbar support.

NPR 1813 is a health and safety standard that's only valid in the Netherlands. The abbreviation stands for Nederlandse Praktijk Richtlijn. Dutch people have a high average height, which is what NPR 1813-certified desk chairs were designed for. The parts can be adjusted in large steps, so every Dutch person can sit properly and in an active position. Even if you're over 192cm tall. The right sitting posture is important to prevent physical complaints.

In Europe, desk chairs that have been approved with the health and safety standard get the EN 1335 certification. EN is short for European Norm. NEN is the Dutch version, the N standing for the Netherlands. People from Europe differ greatly in terms of height. That's why the parts of desk chairs that are NEN 1335-certified, have a large adjustable range. This desk chairs are suitable for people with a height between 151 and 192cm.