EPA Method 500 Series Internal Std #4 Back Catalog number: 30003 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2153.11-K-IO 1-Methyltetraline, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 1559-81-5 Price on request 2870.12-50-IO 3'-Fluoro-2,3,4,4',5-pentachlorobiphenyl, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 676903 Iodosulfuron-methyl sodium, 100mg Price on request