EPA Method 8121 Internal Standard Back Catalog number: 81203 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 66029 PCB No. 29, 100µg/ml in Isooctane, 1ml Price on request A575425-5MG Alogliptin, 5mg Price on request 70186 Fluorobenzene, 1000µg/ml in MeOH, 1ml Price on request