Pesticides - Sandy Loam 4, 50g

Bis(2-ethylhexyl-d17) tetrabromo[13C6]phthalate, 1.2ml x 50ug/ml, toluene

N-?Ethylperfluorooctanesulfo?namide,50 µg/mL,acetonitrile,1mL,

1-Methylpyrene