Multi-Element Internal Standard Back Catalog number: 50160 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended DF-1349-S 1,3,4,9-Tetrachlorodibenzofuran, 1.2ml x 50ug/ml, nonane Price on request 70398 Isosafrole Price on request 2874.11-50-ME Perfluoroundecanoic acid, 50µg/mL, Solvent-methanol, Unit 1mL, # of units-1, Cas.no. 2050-94-8 Price on request