EPA Method 551.1 Internal Standard Back Catalog number: 32103 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended F436000 Fluindione, 25mg Price on request 3129.4-K-IO Tetranoic acid (Butyric), 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 107-92-6 Price on request 682396 Oxibendazole, 100 µg/ml, Methanol, 1ml Price on request