Metals Calibration Standard Revised Back Catalog number: 50189 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674041 Biphenyl, 1000mg Price on request 673933 Fipronil, 100 µg/ml, Acetonitrile, 5ml Price on request 675793 D10-Biphenyl, 100mg Price on request