EPA Method 552 Internal Standard Back Catalog number: 30055 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 0403.24-150-CYX5 n-Tetracosane, ?13C: -26.42, 150µg/mL, Solvent-cyclohexane, Unit 1mL, # of units-5, Cas.no. 646-31-1 Price on request ACQ-SE15-115 Ethanol standard in serum,1.5g/L,serum, 1.5mL Price on request 8471.11-100 Carbadox, Inquire, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 6804-07-5 Price on request