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The article presents a study on the use of supercritical fluid chromatography (SFC) by applying the basic principles of purification in the U.S. It provides an illustration on the effect of flow rate, sample dissolution solvent and column selectivity on the isolation of compounds from a mixture. It highlights the similarities of separating compounds from mixtures using the SFC to the large-scale preparative liquid chromatography.

The article focuses on the benefits of using the Prep 100 supercritical fluid chromatography (SFC) in the purification system in the U.S. It illustrates the efficiency of using the mass-directed reversed-phase liquid chromatography (RPLC) and SFC in the recovery of more compounds form medicinal chemistry. It provides a comparison on the AutoPurification and the Prep 100 SFC MS system specifically on the orthogonality of the two techniques.

The article reports on the process of affinity purification schemes which represents a significant improvement in antibody production in the U.S. It is inferred that the process with two separation mechanisms along with additional specific viral reduction steps meets the requirements for endogenous and adventitious agents. It is also stated that the schemes are typically resulted in 80% process yield which lead to a better batch capacity, shorter process time and efficient facility usage.

Focuses on the introduction of large numbers of columns and packing materials designed for preparative liquid chromatography during the Pittcon conference in the U.S. Basics of preparative chromatography; Exploration of the use of column in preparative high performance liquid chromatography; Goal of a preparactive purification.

Reports on Murray Hill, New Jersey-based BOC's development of an onsite chlorine purification system. Features of the system; Cost effectiveness of onsite purification; Cylinder handling costs.

Features the Wiped-Film Still chemical purification equipment for from Pope Scientific Inc. in Saukville, Wisconsin.

The article highlights the research on the effectiveness of XSelect Columns and Focused Gradients in isolating and purifying ranitidine in the U.S. The research shows that ranitidine has better retention under high percentage of Hydrogen (pH) mobile phase conditions using ammonium hydroxide. Moreover, the method can directly transfer chromatographic separations between the analytical and preparative column dimensions.

Discusses the expansion plans of Sachem, an Austin, Texas-based tetramethylammonium hydroxide supplier for semiconductor manufacturing. Presence in the international market; Application of its expertise in high-purity chemical manufacturing; Products of the company; Search for partnerships and deals.

The article reports on the cooperation between Cornell University fibre scientist Juan Hinestroza and the U.S. government to create fabrics made of functional nanofibres that will decompose toxic industrial chemicals into harmless by-products. It mentions that the potential applications of the fabrics include safety gear for the country's soldiers and filtration systems for buildings and vehicles. Two projects related to the creation of nanofabrics are presented. The first project focuses on the role of small electrical charges in capturing nanoparticles, bacteria and viruses, while the second project will study the incorporation of metal organic polyhedra and metal organic frameworks to polymeric nanofibres.

The article reports on the use of crystalline porous materials by scientist for the catalysis, purification and gas separation in the U.S. The crystalline porous material are widely used because of its porous catalysts that facilitate a smooth molecular flow. Among the crystalline porous materials include zeolites that are easily converted into solid acids and used as catalysts in the chemical industries.

Presents news briefs concerning the chemical industry as of June 30, 2005. Launch of a chromatography column that can be conveniently packed and reused for small-scale monoclonal and polyclonal antibody purification; Licensing of a range of air stable reducing agents by Sigma-Aldrich which it claims offer a safer alternative to lithium aluminum hydride; U.S. patent granted to Microbics for its proprietary technology for treating activated charcoal.

Presents news briefs on new projects in the chemical industry as of September 6, 2004. Amount of a project management and engineering contract awarded by Sasol to Fluor for its refinery upgrades in Secunda, South Africa; Construction of a sodium silicate plant of PQ in Tianjin, China; Reconstruction of a nitric acid purification facility of Air Products in Pueblo, Colorado.

Focuses on several techniques for creating a nuclease-free environment in the laboratory. Importance of nuclease-free environment in research involving DNA and RNA; Sources of RNase contamination; Explanation on what is DNases; Information on the purification technique of MoBio Laboratories in Solana Beach, California.