JIS A 1326:2019规定了加速风化试验方法，用于确认在建筑外墙使用阻燃处理木材产品（以下简称阻燃处理木材）的情况下，抑制火灾蔓延的阻燃效果的持久性。

JIS A 1326:2019 specifies the accelerated weathering test method for the confirmation of the persistence of fire-retardant effect that inhibits fire propagation in the case where fire-retardant treated wood products (hereafter referred to as fire-retardant treated wood) are used for building facades.