Silver (Ag) Back Catalog number: 58847 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 94212 525 Internal Standard Price on request 675856 Teflubenzuron, 100 µg/ml, Acetonitrile, 5ml Price on request 676980 D5-Norfloxacin, 100 µg/ml, Acetonitrile, 1ml Price on request