Tungsten (W) Back Catalog number: 58174 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 677179 4-Nonylphenol-di-ethoxylate, 50 µg/ml, Acetone, Price on request 50596 Mercury (Hg) Price on request 3347.14-100 Coumaphos, 100µg/mL, Solvent-c.hexane or ac.nitrile, Unit 1mL, # of units-1, Cas.no. 56-72-4 Price on request