PAH Standard (50 ppm) Back Catalog number: 98654 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 80210 EPA Method 8021B Mix #3 Price on request 678949 Fipronil-desulfinyl, 10.0 µg/ml, Acetonitrile, 1 Price on request 683728 Acetaldehyd-DNPH, 100mg Price on request