Pyridine as N

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)

Pentachlorophenol, certified, 0.1g

Ofloxacin, certified, 0.1g