EPA 1620 Standard 2

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)

3-n-Butylcarbazole, Please inquire, Solvent-, Unit , # of units-, Cas.no.

Butachlor, 100 µg/ml, Methanol, 1ml