EPA Method 551.1 Standard Back Catalog number: 94519 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93462 PAH Standard Price on request 2513.9-K-ME Acetylsalicylic acid, 1000µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 50-78-2 Price on request 8570.17-100MG Ciprofloxacin,neat,neat,100mg, Price on request