500系列内标/替代挥发性标准品, Internal/Surrogate Std for 500 Series Volatile Methods,2.0 mg/mL in Methanol

27组分挥发性有机物, VOC Mixture,0.2 mg/mL in MeOH

MDL检测浓缩样品, MDL Check Sample Concentrate,0.02 μg/mL in MeOH

A混标, Method 507-Mix A,1000 μg/mL in MtBE

507方法 混标E, Method 507-Mix E,1000 μg/mL in MtBE

性能检测溶液, Performance Check Solution,Varied conc. in MtBE

有机氯混标17组分, Method 508-Chlorinated Pesticides by GC/ECD,1000 μg/mL in MtBE

4-Methylimidazolidine-2-thione ,0.1 mg/mL in 0.1% w/v DTT in Ethyl acetate

丙烯硫脲

6组分非衍生分析物, Underivatized Analytes,Varied conc. in Methanol

非衍生的氯化酸, Underivatized Chlorinated Acids,Varied conc. in MeOH