PSA-GCB-Mix for 2007.01 per AOAC Back Catalog number: 674523 Manufacturer: HPC STANDARDS GmbH Availability: In the manufacturer's stock Price on request - + Recommended 92291 EPA Method 8260 Volatile Standard Price on request C10931750 Butyric acid, 1ml Price on request 673247 Demeton-S-methyl, 100 µg/ml, Acetonitrile, 5ml Price on request