VPH Primary Calibration Spike Rev 1.1 Back Catalog number: 51166 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 676973 D5-Metamitron, 5mg Price on request 678394 Diphenylamine, 100 µg/ml, Acetonitrile, 1ml Price on request 681481 Diethylene glycol dimethyl ether, 1ml Price on request