EPA Method 551 “Mix B” Back Catalog number: 30395 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended N-10850-25MG 4-methylphenanthrene, 25mg Price on request 70471 Perylene, 1000µg/ml in methylene chloride, 1ml Price on request 70410 4,4’-Methylene bis(2-chloroaniline) Price on request