Sodium (Na), 1000µg/ml in Water, 100ml Back Catalog number: 54121 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2688.34-10UG 17 alpha(H),21ß(H)-(22S)-Tetrakishomohopane , neat, Solvent-neat, Unit ca. 10µg , # of units-1, Cas.no. 67069-13-0 Price on request 57114 Silicon (Si) Price on request 66214 Group 3 PCB’s - Low Toxicity Congeners Price on request