Method 1640Mix A Back Catalog number: 53146 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 92512 PAH Standard Price on request 91334 Semi-Volatile Mix #1 Price on request 9050.20-10MG Dihydroisopimaric acid, neat, Solvent-neat, Unit 10mg, # of units-1, Cas.no. 5673-36-9 Price on request