Ethanol in serum control EtOH SE (0.2g/L), 10x3ml

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)

Perfluorooctanesulfonic acid, 100µg/mL in MeOH,1ml

Tetrachloroethene, 100 µg/ml, Methanol, 5ml