JIS B 9908-3:2019
通風用空氣過濾裝置和通風用電動空氣凈化器試驗方法 第3部分:重力效率和氣流阻力與試驗粉塵質量的測定
Test method of air filter units for ventilation and electric air cleaners for ventilation -- Part 3: Determination of the gravimetric efficiency and the air flow resistance versus the mass of test dust captured