Prothiofos, 10.0 µg/ml, Ethyl acetate, 10ml

Paraoxon-methyl, 100 µg/ml, Toluene, 5ml

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

Europium (Eu)