Tefluthrin, 100 µg/ml, Ethyl acetate, 1ml

Benzyldimethyldodecylammonium chloride, 10.0 µg/ml

(±)-Atenolol-d7 (N-isopropyl-d7),100 µg/mL,MeOH,1mL,

Calibration sol. CS5 for HRGC/HRMS Analysis of PCBs, in Nonane, 200µl