NF X43-274-1*NF EN 17199-1:2019 工作场所暴露 测量含有或释放纳米物体或释放可吸入 NOAA 和其他可吸入颗粒的散装材料的粉尘 第1部分:测试方法的要求和选择
Workplace exposure - Measurement of dustiness of bulk materials that contain or release nano-objects or realease respirable NOAA and other respirable particles - Part 1 : requirements and choice of test methods