Naptalam, 100 µg/ml, Acetonitrile, 1ml Back Catalog number: 680014 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended PAH-ISS-B PAH Internal Standard Spiking Solution, 1.2ml, isooctane Price on request 70436 Diethylamine Price on request 79443 Styrene Price on request