Internal Standard Stock Solution, 1.2ml, nonane Back Catalog number: EPA-1668IS Manufacturer: Wellington Laboratories Availability: 1 week Price on request - + Recommended 3505.9-100-CY Terbacil Price on request EPA-1613STOCK EPA Method 1613 Native Stock Solution, 1.2ml, nonane Price on request 1097.12-K-IO 2-n-Butylbenzofuran, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 4265-27-4 Price on request