农残混标, Pesticide Mix 23,10 μg/mL in AcCN

农药混标24, Pesticide Mix 24,Varied conc. in Cyclohexane

农药混标28, Pesticide Mix 28,10 μg/mL in Ethyl acetate

多氯联苯7种混标(28、52、101、118、138、153、180), PCB Congener Content Evaluation Revised Mix 1,10 μg/mL in Isooctane

多氯联苯7种混标, Congener Calibration Mix #8,10 μg/mL in Isooctane

多氯联苯8种混标, Congener Calibration Mix #21,10 μg/mL in Isooctane

多氯联苯9种混标, Congener Calibration Mix #24,10 μg/mL in Isooctane

Ca、Mg、Fe、Na、K混标, Calibration Mix Majors,500 μg/mL in 2-5% Nitric Acid

环境内部标准混标, Environmetal Internal Standard Mix,10 μg/mL in 2-5% Nitric Acid

标准品, Multi-element Calibration Standard #4,10 μg/mL in Water, tr Hydrofluoric acid