EPA Method 515.3 - Underivatized acids Back Catalog number: 30150 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 678954 Flamprop, 100 µg/ml, Acetonitrile, 1ml Price on request 673234 Clofentezine, 10.0 µg/ml, Acetonitrile, 10ml Price on request DFP-SS-A10 Mass-Labelled PCDD & PCB Sampling Spike Solution, 1.2ml, nonane Price on request