Sodium (Na), 1000µg/ml in Water, 100ml Back Catalog number: 54121 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10038.18-100-AN N-Nitroso-N,N-di-(7-methyloctyl)amine, 100µg/mL, Solvent-acetonitrile, Unit 1mL, # of units-1, Cas.no. 643014-99-7 Price on request TCDT-83 2,3,7,8-Tetrachlorodibenzothiophene, 1.2ml x 50ug/ml, toluene Price on request 32003 EPA Method 500 Series Internal Std #4 Price on request