HPLC Solvents by J T Baker
High performance liquid chromatography problems are frequently related to the variability of the reagents used. Specifically: spurious UV absorbance, particulate matter, residues, unknown or uncontrolled water, etc. 21 Baker HPLC solvents, however, now provide maximum reproducibility . . . new predictability . . . exceptional consistency. How is such unusual consistency achieved? Extremely tight specifications coupled with superior product definition create consistency. Examples? HPLC Acetonitrile is controlled for low UV absorbance at 220nm (0.01 max.), 254nm (0.01 max.), 280nm (0.01 max.) and at 350nm (0.01 max.); water 0.02% max.; residue 0.0005% max. Further characterization is provided by: GC assay (99.7% min.), consistent refractive index and fluorescence (at 450nm and emission maximum). Plus physical data. And as with all 'Baker Analyzed'® Reagents the actual lot analysis is always on the label as an assurance of quality and a time saving reference. You can always verify our claims for reproducibility beforehand. Consistency? Here are ten consecutive lots of Baker HPLC acetonitrile.
Lot No·.: 836118 836119 836120 836121 836122 836123 836124 836125 838128 836127 Residue. % 0.00006 0.00007 0.0002 0.0003 0.0001 0.00006 0.001 0.00008 0.0002 0.00004 Water, % 0.005 0.002 0.003 0.003 0.002 0.01 0.006 0.003 0.003 0.003 Absorbance at 220 nm
