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A typical LC chromatogram of a mixture of ceftriaxone sodium, 500 ppm (peak #2) and sulbactam sodium, 250 ppm (peak #1). The chromatographic conditions used were: ODS Hypersil C18 Column, mobile phase of acetonitrile and 0.005N TBAH (30:70), flow rate of 1.5 ml/min, detection wavelength of 220 nm, room temperature 25°C.
