Diphenylamine, 100 µg/ml, Acetonitrile, 1ml Back Catalog number: 678394 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 682228 4-Hydroxybenzophenone, 100mg Price on request 71751 o-Benzyl-p-chlorophenol Price on request 40004 EPA Method 604.1 Analytes Price on request