EPA Method 548.1 Internal Standard Back Catalog number: 30078 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 56011 Sodium (Na) Price on request 8471.11-50-W Carbadox, 50µg/mL, Solvent-water, Unit 1mL, # of units-1, Cas.no. 6804-07-5 Price on request 2096.16-100MG Bis(2-ethoxyethyl) phthalate, neat, Solvent-neat, Unit 100mg, # of units-1, Cas.no. 605-54-9 Price on request