EPA Method 8040 - Surrogate Standard Back Catalog number: 80403 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 79531 4-n-Nonylphenol Price on request 678311 Dichlofenthion, 10 µg/ml, Acetonitrile, 10ml Price on request 9196.21-100-ME 17-Hydroxypregnenolone, 100µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 387-79-1 Price on request