EPA Method 8315 Calibration Mix #1 Back Catalog number: 83509 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677342 Nonafluoro-1-butanesulfonic acid, 50 µg/ml, Metha Price on request 679944 Venlafaxine hydrochloride, 10mg Price on request 3413.16-100-CY Haloxyfop Price on request