UOP方法543标准品(GC 分析芳香烃中非芳香烃), UOP Method 543 Standard,Varied Conc by wgt%

UOP方法931标准品(用GC 分析混合二甲苯中痕量杂质), UOP Method 931 Standard,Varied wt%

USP 561农药标准品, USP 561 Pesticide Standard SET

1,2,3,4-Tetramethylbenzene

1,2,3,4-四甲基苯

Vitamin B2

维生素B2/核黄素

维生素K2, Vitamin K2

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

VPH 含替代物的第一稀释标准品 / VPH16种套标, VPH Primary Dilution Standard with Surrogate,2000 μg/mL in MeOH

亚甲基蓝活性标准物质, Methylene Blue Activated Substance Standard,1000 μg/mL in Water

标准品, TOX Standard,1000 μg/mL in Methanol