EPA Method 8140/8141 Analytes Back Catalog number: 81400 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended A481504 L-Alanine-13C3, 25mg Price on request 94833 CLP Semi-Volatile Calibration Mix #1 Price on request 93594 Aldehyde-DNPH Mix Price on request