beta-Endosulfan, 100 µg/ml, Methanol, 1ml

Surrogate Mix

(±)-Sotalol-d7 hydrochloride (isopropyl-d7),100 µg/mL,MeOH,1mL,

2,3,6-Trichlorobiphenyl ,100 µg/mL,isooctane,1mL,