4,4'-DDT (ring-13C12), 100ug/ml in n-Nonane, 1,2ml

Thiophene in Thiophene-free Benzene Units: 5x1mL ampoule, 10mL screw-capped bottle Chiron No. Concentration Light White Mineral Oil µg thiophene/g (20 cSt at 40°C)

EPA Method 8240A VOC Mixes

Quinalphos, 100 µg/ml, Acetonitrile, 1ml