EPA Method 8141/1657 Surrogate Standard Back Catalog number: 92357 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 43017 Nitrobenzene-d5 Price on request 8829.18-K-IO 12-Oxystearic acid, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 10531.8-1G 3-Hydroxyindole Price on request