Tungsten (W) Back Catalog number: 56074 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended D3-N-MEFOSAA N-methyl-d3-perfluoro-1-octanesulfonamidoacetic acid, 50µg/ml in MeOH, 1,2ml Price on request 91958A EPA Method 1664 - Oil & Grease (Sonicate) Price on request 11681.12-100-IO 3,3',5-Trichlorobiphenyl ,100 µg/mL,isooctane,1mL, Price on request