Tungsten (W) Back Catalog number: 57074 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 674813 Bifenox, 100 µg/ml, Acetonitrile, 5ml Price on request 94509 EPA Method 8151 Standard Price on request 677367 Anthracene, 100 µg/ml, Cyclohexane, 1ml Price on request