EPA Method 502.1 - Liquids

alpha alpha alpha (20R,24RS)-24-Ethylcholestane (82% in mixture with alpha alpha alpha (20S,24RS)-24-Ethylcholestane), 100µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no.

Hexazinone, 10.0 µg/ml, Acetonitrile, 10ml

Acetone-2,4-DNPH, 1000μg/ml in Acetonitrile, 5ml