Home / Standards / GB/T 4333.7-2019 GB/T 4333.7-2019 Active Ferrosilicon—Determination of sulfur content—Infrared absorption method and chromatographic separation-barium sulfate gravimetric method 硅铁 硫含量的测定 红外线吸收法和色层分离硫酸钡重量法 Standard Type GBT ICS 77.100 CCS H11 Status 现行 Issue Date 2019-06-04 Implementation 2020-05-01 Responsible Dept 中国钢铁工业协会 Drafting Unit N/A