自定义标准@甲醇中的不同浓度, Custom Standard @ Varied concentration in Methanol

27种有机磷混标(符合HJ 1189—2021)@ 2000 μg/mL 丙酮溶液, Custom Pesticide Standard @ 2000 μg/mL in Acetone

D6379-System Resolution Standard,Varied concentrations in Heptane

D6379-System Resolution Standard,Varied concentrations in Heptane

4种氘代内标混标,2000 μg/mL溶于二氯甲烷(HJ 1189-2021), Custom Labeled Standard @ 2000 μg/mL in Dichloromethane

4种金属ICP混标, Custom ICP Standard @ 1000 μg/mL in Water-95% Nitric acid-5% Hydrofluoric acid-tr