Napropamide, 100 µg/ml, Acetonitrile, 5ml Back Catalog number: 678444 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 0940.14-500-IO 3,4-Dimethyldiphenylsulfide, 500µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 2828-65-1 Price on request 56033 Arsenic (As) Price on request 71813 1,3-Phenylenediamine, 1000µg/mL in methylene chloride, 1ml Price on request