采用ISO/TS 16840-12:2015，其中规定了轮椅座垫浸没和包覆性能表征的仪器、试验方法和披露要求。它使用仪器压头，通过测量浸入和包封的缓冲效果，来表征每个压头和试验缓冲垫之间的界面压力。

Adopts ISO/TS 16840-12:2015 which specifies apparatus, test methods, and disclosure requirements for characterization of wheelchair seat cushion immersion and envelopment properties. It uses instrumented indenters to characterize the interface pressure between each indenter and the test cushion by measuring the cushioning effects of immersion and envelopment.