4,4'-Dibromobiphenyl ,0.1 mg/mL in Ethyl acetate

4,4'-二溴联苯

有机氯混标30组分, Method 508-Chlorinated Pesticides by GC/ECD,1000 μg/mL in MtBE

4,4'-Dichlorobiphenyl,0.5 mg/mL in MtBE

4,4-二氯联苯

实验室甲基衍生物性能检测溶液, Laboratory Performance Check Methyl Derivatives,Varied conc. in MtBE

10组分校准溶液, Calibration Solution,Varied conc. in MtBE

EPA Method 521 Surrogate Standard Stock Solution,1000 μg/mL in Methylene chloride

EPA521储备液(N-亚硝基二甲胺-D6)

标准品, EPA Method 524.3 Internal/Surrogate Std.,2.0 mg/mL in Methanol

DFTPP ,0.1 mg/mL in Dichloromethane

十氟三苯基磷

4种峰拖尾因子混标, Peak Tailing Factor Standard,10 μg/mL in Dichloromethane

EPA Method 529 Internal Standard Stock Solution,2.0 mg/mL in Ethyl acetate

EPA方法529内部标准储备溶液