EPA Method 531.1 - Analytes Mixture Back Catalog number: 33042R Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended PCB-ST-A2 Native PCB Stock Solution , 1.2ml , nonane Price on request 73496 N-Desmethyldiltiazem Price on request 96743 Triazines Mix Price on request