6-Hydroxy-2,3,3',4,4',5'-hexabromodiphenyl ether

Methiocarb,100 μg/mL in Acetonitrile

甲醇中2种制冷剂混标(符合HJ 1194-2021), Custom Refrigerants Standard @ 1000 μg/mL in Methanol

D6379-System Resolution Standard,Varied concentrations in Heptane

4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanone-d4, 1000 μg/mL in MeOH

13种醛酮-DNPH衍生物混标,不同浓度溶于乙腈, Custom DNPH Standard@ Varied conc. In Acetonitrile