EPA Method 548 Analyte Back Catalog number: 30048 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 95350 515.4Mix - Underivatized Acids Price on request 83543 n-Butyraldehyde-DNPH Price on request 73939 Valsartan, 1000µg/ml in MeOH, 1ml Price on request