UOP方法720标准品(用GC 分析高纯度邻二甲苯中的杂质), UOP Method 720 Standard,Varied conc. in p-Xylene

标准品, USP 232 Oral Impurities Mix 1,Varied conc. in 2-5% Nitric Acid

标准品, USP 232 Internal Standard,Varied conc. in 2-5% Nitric Acid, tr HCl, tr HF

p-Ethyltoluene

对-甲乙苯

Nonadecylbenzene

十九烷基苯

十八烷基苯, Octadecylbenzene

Vitamin C

抗坏血酸/维生素C

Vitamin B12

维生素B12标准品

(+)-d-Tocopherol

(+)-d-生育酚,此产品无准确纯度

VPH15种稀释混标, VPH Primary Dilution Standard,2000 μg/mL in MeOH