PAH Standard (50 ppm) Back Catalog number: 98654 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674700 Dichlorprop, 250mg Price on request X9120 Indeno(1,2,3-cd)pyrene Price on request 679884 4,4'-Diamino-3,3'-dimethyldiphenylmethane, 100 µg/ Price on request