Diphenylamine, 100 µg/ml, Acetonitrile, 1ml Back Catalog number: 678394 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended MA9112 pH 12.45 buffer solution (230mL) Price on request H669500 Homovanillic Acid, 50mg Price on request 675355 Sulfadimethoxine, 250mg Price on request