Multi-Element Calibration Standard-4 Back Catalog number: 50013 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended D454552 4,6-Dihydroxypyrazolo[3,4-d]pyrimidine-13C,15N2, 1mg Price on request 682671 Ethylene carbonate, 1000mg Price on request MTBBPA 3,3',5,5'-Tetrabromobisphenol-A [rings; 13C12], 50µg/ml in MeOH, 1,2ml Price on request