TRANS-CHLORDANE (GAMMA) (13C10, 99%) 100 UG/ML IN …

BETA-THIODIGLYCOL (13C4, 99%)…

CIS-NONACHLOR (13C10, 98%) 100 UG/ML IN NONANE…

KEPONE (CHLORDECONE) (13C10, 99%) 100 UG/ML IN NO…

ENDRIN ALDEHYDE (13C12, 99%) 100 UG/ML IN NONANE…

CAFFEINE (TRIMETHYL-13C3, 99%) 100 UG/ML IN METHANO…

1,2,4,5-TETRACHLOROBENZENE (13C6, 99%)…

RICININE 100 UG/ML IN ACETONITRILE (RING-13C5, 99…

1,1-DICHLOROETHYLENE 100 UG/ML IN METHANOL (RANDOM-…

1,2-DICHLOROETHYLENE STABILIZED W/ HYDROQUINONE (13…