Phthalic acid, benzylbutyl ester, certified, 0.25g Back Catalog number: C16168000 Availability: In the manufacturer's stock Price on request - + Recommended S-4188-SET EPA O-FID Quantitative Calibration Mixes (with Internal Standard) 5 Analytes, each Wt.% as listed in RFA Gasoline; unit: 5x1mL one of each Std. Analyte Std.1 Std.2 Std.3 Std.4 Std.5 Price on request EPA-533IS EPA Method 533 Isotope Performance Standard PDS, 1.2ml, methanol Price on request 678260 Amitrole, 100 µg/ml, Acetonitrile, 1ml Price on request