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Pawling Engineered Products is a vertically integrated business that designs and manufactures highly specialized elastomeric septa, seals, gaskets, and other unique rubber products for many different industries.

Thermo Fisher Scientific is the world leader in serving science, enabling our customers to make the world healthier, cleaner, and safer. Serving customers through two premier brands, Thermo Scientific and Fisher Scientific, we help solve analytical challenges from routine testing to complex research and discovery.

DataApex is an independent software company with expertise in developing and manufacturing chromatography data stations.

A non-invasive near-infrared spectroscopy method to characterize a wide range of stationary phases.

Over the past 25 years, UCT has distinguished themselves as a major competitor in the field of silica based solid phase extraction technology.

Supelco, a Sigma-Aldrich Corporation subsidiary, is an ISO 9001-registered company that manufactures and distributes an extensive selection of HPLC, chiral, and GC columns as well as SPE products, SPME materials, chemical standards, and customized products and services (such as resin, media processing, and small unit packaging).

The concluding part of the series on the role of system suitability tests in the pharmaceutical industry.

IDEX Health & Science LLC designs, develops, and manufactures liquid subassemblies and precision components for a wide range of applications requiring precise control and measurement.

Formed in 1997, Markes International is the world's leading supplier of thermal desorption (TD) instrumentation and related sampling accessories for monitoring toxic and odorous chemicals in air, gas, and materials.

Daiso is one of the world's largest manufacturers of spherical chromatographic-grade silica gel.

Beckman Coulter develops, manufactures, and markets products that simplify, automate, and innovate complex biomedical testing.

For over 70 years, industries around the world have trusted LECO Corporation to deliver high-performance analytical instrumentation.

Can you qualify or calibrate your chromatograph using a system suitability test? No. However, for the doubters among you I'll spend the rest of this two-part article series explaining why.

This installment will trace the development of SPP supports to the present-day versions that rival UHPLC supports.

PerkinElmer is a global scientific leader providing an extensive range of technology solutions and services to address the most critical issues facing humanity.

Our continuing leadership in chromatography helps us create powerful solutions to increase productivity for the industries that shape the world.

With worldwide headquarters in Herisau, Switzerland and regional offices spanning every continent, Metrohm is a global leader and innovator in ion analysis equipment for QA/QC, R&D, and general testing labs in virtually any industry.

Hamilton Company is a global enterprise with manufacturing facilities in Reno, Nevada, and Bonaduz, Switzerland.

ZirChrom Separations, Inc. is a company formed in 1995 located in Anoka, Minnesota.

SPEX CertiPrep manufactures high quality organic certified reference materials for GC, GC–MS, and HPLC. We offer a wide variety of organic products (EPA methods, volatiles, semi-volatiles, PCB, pesticides, and herbicides) with over 3,000 stock items that are ready to ship within 24–48 hours. Our Custom Standards Program allows laboratories to design their own standards with quick turnaround time at no additional cost.

EMD Chemicals Inc. is a North American affiliate of Merck KGaA, Darmstadt, Germany.

Wyatt Technology Corp. (WTC) is the world's largest company dedicated to light-scattering detectors for LC. Dr. Philip J. Wyatt, the president and founder of the company, was the developer of the first commercial multiangle light-scattering instruments more than 40 years ago.

The concluding part of the series on the role of system suitability tests in the pharmaceutical industry.

Quadrex Corporation was founded in 1976 in order to provide commercially available, high quality capillary columns to the gas chromatography market.

Quant Technologies is a leader in the development and manufacture of Aerosol-based HPLC detectors.

Teledyne Tekmar is the leader in analytical instrumentation for the laboratory. Our world-renowned volatile organic compound (VOC) products include systems for gas chromatography sample introduction, high-throughput purge-and-trap sample concentration, static and dynamic headspace analysis, and sample automation.

Polymer Char, the world's leading polyolefin characterization company, is devoted to the development of state-of-the-art instrumentation for structural characterization of polyolefins.

Methanol and acetonitrile are the two most popular organic solvents to use in the mobile phase for reversed-phase liquid chromatography (LC) separations. Tetrahydrofuran is also used to a lesser extent. Why are these solvents the most popular ones? Are there alternative solvents that should be tried? This month's "LC Troubleshooting" examines these and some other aspects of solvent selection for LC.