产品详情
规格:5g
含量:71.09% C, 6.71% H, 10.36% N, 11.84% O
Sulfanilamide standard磺胺标样
EDTA(乙二胺四乙酸标样)
Chromium (III)-oxide 三氧化铬
Tungsten (VI)-oxide 氧化钨