Chloroform-13C,2000 µg/mL,MeOH,1mL,

2,2',3,4,5,5',6-Heptachlorobiphenyl ,100 µg/mL,isooctane,1mL,

15N3-Simazine, 100 µg/ml, Acetonitrile, 1ml

DEET, 250mg