GB/T 34765-2017
Determination of mineral fulvic acids content
GB/T 34765-2024
Fertilizers and soil conditioners—Determination of fulvic acid content and carbon coefficient
HG/T 5937-2021
GB/T 38072-2019
Fulvic acid raw materials and fertilizers-Terms
HG/T 5331\uff5e5334-2018
20230879-T-606
Fertilizers and soil conditioners — Determination of humic and hydrophobic fulvic acids concentrations in fertilizer materials
GB/T 35112-2017
Humic-acids and fulvic-acids materials products for agricultural use—Classification
HG/T 5334-2018
Potassium fulvrate
HG/T 5934\uff5e5935-2021
HG/T 5934-2021
DB21/T 2493-2015
HG/T 5935-2021
T/CPFIA 0002-2022
GB/T 27717-2011(\u82f1\u6587\u7248)
家具中富马酸二甲酯含量的测定
T/DWNC 001-2023
GB/T 6730.8-2016(\u82f1\u6587\u7248)
铁矿石 亚铁含量的测定 重铬酸钾滴定法
GB/T 24583.1-2019(\u82f1\u6587\u7248)
钒氮合金 钒含量的测定 硫酸亚铁铵滴定法
T/CI 383-2024
GB/T 6730.7-2016(\u82f1\u6587\u7248)
铁矿石 金属铁含量的测定 磺基水杨酸分光光度法
T/CPFIA 0003-2022