PAH Standard (20 ppm) Back Catalog number: 98653 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 1782.10-10MG 1,8-Diaminonaphthalene, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 479-27-6 Price on request 673795 Maleic hydrazide, 250mg Price on request 70065 trans-Chlordane Price on request