15N3-Atrazine, 100 µg/ml, Acetonitrile, 1ml Back Catalog number: 678256 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 682692 4-n-Nonylphenol-mono-ethoxylate, 100 µg/ml, Aceto Price on request 0723.12-K-IO 1,4-Dimethylnaphthalene, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 571-58-4 Price on request 679627 4-Aminoantipyrine, 100mg Price on request