Tungsten (W) Back Catalog number: 57174 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 673543 Dichlofluanid, 10.0 µg/ml, Ethyl acetate, 10ml Price on request 9872.16-50-IO 2,9-Dimethylphenanthrene, 50µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 17980-09-5 Price on request 0053.17-200-T Benzo[b]fluoren-11-one, 200µg/mL, Solvent-toluene, Unit 1mL, # of units-1, Cas.no. 3074-03-1 Price on request