EN 1335

EN 1335-1:2020+A1:2022 Office furniture – Office work chair – Part 1: Dimensions – Determination of dimensions
It specifies dimensions of four types of chairs (type Ax, A, B, C work chair) as well as test methods for their determination.

ISO 24496:2021 Office furniture — Office chairs — Methods for the determination of dimensions
This document specifies methods for the determination of the dimensions of office chairs. This document does not contain dimensional specifications or requirements.

EN 1335-2:2018 Office furniture – Office work chair – Part 2: Safety requirements
This document specifies safety, strength and durability requirements for office work chairs. It does not apply to other seating in the office area for which other European Standards exist. The requirements are based upon use for 8 h a day by persons weighing up to 110 kg. Annex A (informative) contains loads, masses and cycles for functional tests.

Office work chairs can be assessed according to these standards.

Types of furniture testing