EPA Method 508 Surrogate Standard Back Catalog number: 19042 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 9273.20-10MG Naltrexone (base, anhydrous), neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 16590-41-3 Price on request 10900-0450-100ME5 trans-1,2-Dichloroethylene, 100µg/ml in MeOH, 5ml Price on request 3200.14-K-IO 9-cis-Tetradecenoic acid, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 544-64-9 Price on request