Home / Standards / GB/T 3780.27-2020 GB/T 3780.27-2020 Active Carbon black—Part 27:Determination of aggregate size distribution by disc centrifuge photosedimentometry 炭黑 第27部分:用圆盘式离心光学沉积测量法测定聚集体尺寸分布 Standard Type GBT ICS 83.040.20 CCS G49 Status 现行 Issue Date 2020-11-19 Implementation 2021-10-01 Responsible Dept 中国石油和化学工业联合会 Drafting Unit N/A