EPA Method 1657 Analytes Back Catalog number: 31784 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 91004 EPA Method 8270C Pesticide Mix #24 Price on request 92744 Multi-Class Pesticide Mix #2 Price on request 8483.19-250MG Metoprolol tartrate, neat, Solvent-neat, Unit 250mg, # of units-1, Cas.no. 56392-17-7 Price on request