EPA Method 527 Surrogate Standard Back Catalog number: 95053 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 83610 Isovaleraldehyde-DNPH, 100µg/ml in Acetonitrile, 1ml Price on request 3005.10-K-IO 2,3-Dimethyloctane, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 7146-60-3 Price on request 10426.20-100-ME 6-ß-Naltrexol Price on request