EPA Method 515.1 Internal Standard Back Catalog number: 30023 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 8625.15-10-IO 4-n-Nonylphenol (ring13C6), 10µg/ml, Solvent-Isooctane, Unit 1mL, # of units-1, Cas.no. Price on request 672951 Colistin sulfate, 100mg Price on request BDE-154S 2,2',4,4',5,6'-Hexabromodiphenyl ether,50µg/ml,1ml Price on request