JIS B 9908-3:2019
通风用空气过滤装置和通风用电动空气净化器试验方法 第3部分:重力效率和气流阻力与试验粉尘质量的测定
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