Sulfamethazine,neat,neat,250mg,

Silver (Ag), 1000µg/ml in 2%-HNO3/Water, 100ml

Chlorotoluron, 100 µg/ml, Acetonitrile, 5ml

Di-n-propyl phthalate-3,4,5,6-d4,1000 µg/mL,isooctane,1mL