Pharmaceutical Solutions

FEATURED LITERATURE

Ultra II™ LC Columns: The Column Line Designed for Optimal Chromatography on ANY LC System, Based on Highly Inert Restek Silica

Ultra II™ is the first LC column line specifically designed for universal application and completely scalable chromatography, from conventional to ultra-high pressure systems. Available in a wide range of phases, including traditional and unique chemistries.
lit. cat.# GNTS1177 (393kb PDF)

Resolution Evolution: Biphenyl—Next Generation of Phenyl Columns

Biphenyl columns provide both high hydrophobic retention and aromatic selectivity in the same column. Orthogonal separations can be achieved with simple mobile phase changes, giving markedly better separations for a wide variety of molecules.
lit. cat.# GNFL1096 (523kb PDF)

Residual Solvent Analysis: Complete Solutions for Residual Solvent Testing

This 12-page reference includes a review of headspace fundamentals, the revised USP <467> method (July, 2008), chromatography for Procedures A, B, and C, and technical tips for optimization. Guidance on fast, effect method development is given.
lit. cat.# PHFL1018 (483kb PDF)

Custom Residual Solvents Mixes Order Form

Save time and money—let Restek custom blend reference standards specifically for your residual solvent testing needs! | Download (76kb pdf)

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Featured Articles

Pesticides in Dietary Supplements: Advantages of QuEChERS vs. PAM 303

< Added March 2010

Restek has developed the first QuEChERS-based method for determining pesticide residues in dietary supplements. This simple, cost-effective procedure reduces matrix interferences as well as sample prep variation among technicians.
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Improve Pass Rates for Residual Solvents by USP <467> Using the new Rxi®-624Sil MS GC Column

Not all G43 columns are equivalent. New Rxi®-624Sil MS columns reliably produce improved resolution and sensitivity, increasing system suitability pass rates and ensuring more productive laboratory time.
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Achieve Faster LC on Any System Using Ultra II™ Columns

Significant savings can be obtained without the costly upgrade to UHPLC. This famotidine example illustrates how a 90% reduction in analysis time and solvent volume resulted from strategic LC column choices.
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Two Options for Analyzing Potential Genotoxic Impurities

Laboratory needs for analyzing PGIs in API vary. Here we developed both a fast analysis of sulfonate esters on the Rxi®-5Sil MS column, and a comprehensive method for both sulfonate esters and alkyl halides on the Rtx®-200 column.
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Explaining the Small Particle Advantage: Faster Sample
Throughput on a 1.9µm Pinnacle™ DB column

Here we demonstrate the importance of stationary phase choice in UHPLC separations. By optimizing selectivity for your analytes of interest faster separations can be achieved without compromising resolution.
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Acetonitrile Shortage: Short-Term & Long-Term Solutions

Resources to assist analytical laboratories in coping with the limited availability of acetonitrile. Ways to reduce solvent consumption, shorten analysis times, and switch to alternative mobile phases.
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