EPA Method 524 & 624 - Internal Standard Back Catalog number: 19494 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 3674.15-K-IO 2-Methoxyphenanthrene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 13837-48-4 Price on request 1021.20-K-IO n-Eicosane-d42, 1000µg/ml in IO, 1ml Price on request 50103 GFAA Mix Price on request