PCB Mix 1 ppb Back Catalog number: 95019 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 18000-0070-100AN5 L-Ascorbic acid sodium, 100µg/ml in Acetonitrile, Price on request M320270-250MG 6-Methylmercaptopurine, 250mg Price on request 96032 Internal Standard - Surrogate Mix Price on request