EPA Method 525.2 - 526 Internal Standard

4-Chloro-3-methylphenol, 100 µg/ml, Methanol, 5m

D(-​)​-​Isoascorbic Acid (Erythorbic Acid), 10g

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)