EPA Method 617 - Analytes Mix #2 Back Catalog number: 40008 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended P4100000 Pyridoxine hydrochloride, 100mg Price on request 94243 Semi-Volatile Standard Price on request 31796-1 Butyric acid, 250μg/ml in Water, 1ml Price on request