EPA Method 548 Analyte Back Catalog number: 30048 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 73935 4-Acetamidoantipyrine, 1000µg/ml in MeOH, 1ml Price on request 52135 Multi-Element Solution 3 Price on request 11903.6-K-ME Metronidazole,1000 µg/mL,MeOH,1mL, Price on request