EPA Method 515.1 Internal Standard Back Catalog number: 31023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 680035 Zearalenone-14-O-beta-glucoside, 10mg Price on request 3212.18-K-IO 9-trans,12-trans-Octadecadienoic acid, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 506-21-8 Price on request 52336 Mixed Calibration Standard 2 Price on request