Bromodichloromethane, 100 µg/ml, Methanol, 5ml

cis-(13C10)Nonachlor, 1.2mL x 100ug/mL, nonane

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

2,4-D-d3, 100μg/ml in Acetonitrile, 1ml