Method 8151 Standard Back Catalog number: 94230 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 93845 EPA 525 Spike Mix Price on request 30068 Internal standard 2, 2000g/ml in MeOH, 1ml Price on request MHPCHLOR (13C10)Heptachlor, 1.2mL x 100ug/mL, nonane Price on request