PAH Spike Stock Back Catalog number: 97680 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 91297 EPA Method 525.2 - 526 Internal Standard Price on request 50140 AA Mix #2 Price on request 11902.19-K-ME Protriptyline hydrochloride ,1000 µg base/mL,MeOH,1mL, Price on request