n-Butyltri-n-pentyltin,1000 µg/mL,isooctane,1mL,

(±)-Sotalol-d7 hydrochloride (iso-propyl-d7)

3-Bromothiophene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 872-31-1

EPA Method 8260B Surrogate Standard