本文件规定了通过测量座垫对座垫上荷载重心位移的响应来确定轮椅座垫横向稳定性的装置、试验方法和披露要求。它提供了一种确定垫层特定物理和机械性能变化的方法。它不提供特定于缓冲特定用户性能的信息。它不提供与前后稳定性相关的信息，也不提供坐垫边缘对稳定性的贡献。 购买本文件时可获得的所有当前修订均包含在购买本文件中。

This document specifies apparatus, test methods, and disclosure requirements for determination of lateral stability properties of wheelchair seat cushions by measuring the response from the cushion to a shift in the centre of mass of the load on the cushion. It provides a method of determining changes in a particular physical and mechanical property of the cushion. It does not provide information specific to cushion performance for a particular individual user. It does not provide information related to anterior-posterior stability, nor to stability contributions from cushion edges.All current amendments available at time of purchase are included with the purchase of this document.