EPA Method 525 - PCB Standard Back Catalog number: 19063 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 683369 Hypoxanthine, 1000mg Price on request 73540 4,6-Dichloro-2-(methylthio)pyrimidine Price on request 92189 EPA Method 525 Pesticide Standard Price on request