Analytical Instrumentation Permeation Tubes for Light Hydrocarbons

The Kin-Tek (USA) Trace Source 57 Series refillable permeation tubes extend the range of analyte compounds to include light hydrocarbons and other gases with vapour pressures too high for conventional permeation tubes. The 57 Series tubes are used in the Kin-Tek FlexStream calibration gas generator to produce ppm and ppb mixtures directly from pure gases.

Typically permeation tubes contain a liquefied analyte under its vapour pressure at the operating temperature of the permeation tube. This limits the range of compounds available in permeation tubes. 57 Series tubes use only the gas phase of the compound. Controlling the pressure in the tube allows high vapour pressure compounds such as methane, ethane, or ethylene to be dispensed by permeation. Emission rate is proportional to the compound pressure in the tube. For very low emission rates the compound can be sealed in the tube. For higher emission rates tubes should be used with the FlexStream GF Module to allow for compound pressure control and periodic purge and refill.

Mixtures can also be diluted if the tube is certified for each gas in the mixture. Single step dilution ratios of 1000:1 to over 50,000,000:1 can be attained allowing ppb mixtures to be made directly from the pure analyte compound.

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Enhanced Polar Retention with New Polar UHPLC Columns

Phenomenex (USA) has added even more separation power to its novel UHPLC product portfolio with the introduction of the Luna Omega 1.6 µm Polar C18 stationary phase.

The Luna Omega Polar C18 is a novel UHPLC stationary phase capable of providing a unique selectivity within a wide elution window and increased retention for both polar and non-polar analytes. The all-purpose C18 ligand provides hydrophobic interactions while a polar modified particle surface delivers enhanced polar retention and aqueous stability. The ability to get combined retention of polars and non-polars by the Luna Omega Polar C18 means that this column has a very wide applicability and can be used in nearly every industry that depends on UHPLC instrumentation, including those that

work with large compound screens, metabolite/impurity profiles, and even unknown natural products.

Compared to traditional alkyl phases, the Luna Omega Polar C18 offers greater polar compound retention. This can broaden the solvent systems at a chromatographer’s disposal for method development while also helping to deliver desired resolution between important compounds or even move peaks out of matrix suppression zones to allow for greater sensitivity. Unlike traditional C18 stationary phases, the polar modified surface of the Luna Omega Polar C18 gives it stability in 100 percent aqueous mobile phase conditions. This is useful for methods that may require resolution of problematic polar (acidic or basic) compounds that have poor retention under reversed phase conditions.

The Luna Omega Polar C18 can also be used to upgrade existing UHPLC methods. With a novel and finely tuned manufacturing process, Luna Omega 1.6 µm UHPLC silica is produced at the highest quality and consistency to ensure high efficiency, surface area, mechanical strength, and inertness. These attributes in combination with industry-leading packing technologies and a unique selectivity profile will potentially allow customers to realize lower limits of detection with increases in sensitivity levels as well as efficiency/peak capacity gains that aid in the resolution of closely eluting peaks. Combining the Polar C18 with the previously released fully porous Luna Omega C18 and Kinetex 1.7 µm core-shell phases further expands the options for UHPLC method development and improvement.

Enhanced with 20 years of technology, innovation, and experience, Luna Omega 1.6 µm columns build upon the Luna legacy to provide incredible UHPLC performance and selectivity. Now, with the addition of the Luna Omega Polar C18 stationary phase, the benefits of greater polar retention and 100 percent aqueous stability are also easily within reach.

High-Performance, Near Infrared Analysers for Laboratory and In-Line Measurements

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Grabner Instruments (Austria), inventor of and a world leader in vapour pressure testing, has expanded its product offering with the addition of near infrared (NIR) analysis from Light Technology Industries (LTI). Grabner Instruments will market, sell and support LTI NIR process analysers worldwide.

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Based in Gaithersburg, MD, LTI has been known for 30 years as an innovator in the field of NIR analysis. With an installed base of over 1000 systems, LTI’s products include both in-line process and benchtop analysers, which complement Grabner’s in-line and laboratory instrumentation for petroleum testing.

LTI instruments provide solutions throughout the refining process from crude oil to refined fuels. Its instruments offer rapid, non-destructive measurement of chemical properties and help to reduce laboratory costs, while improving process controls in refineries and chemical plants. In all cases, its ability to quickly measure physical and chemical properties easily, accurately and in a non-destructive manner provides significant value for LTI instrument users.

LTI’s ParaFuel NIR process analysers are used by national, state and corporate laboratories for octane, pump quality testing and other fuel measurements such as biodiesel content. The analyser provides real-time in-line analysis of crude oil, blended fuels and components, diesel, gasoline, jet fuel, kerosene and other petroleum fractions for a wide range of critical properties, including octane, distillation points, Reid vapour pressure and more. It also is available in a benchtop version designed to improve laboratory efficiency.

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For further product-information ask for our Thermal Process Engineering Booklet!

Accurate Instrument Calibration for

Analytical Applications

AlyTech (France) recently introduced the GasMix version: Zephyr! This two channel dilution system is the perfect companion of the scientist who needs to accurately calibrate an analytical instrument. Whether it is a GC application, elemental analyser or any kind of gas application, Zephyr will produceand deliver multilevel calibration gas material.

Starting from a pure or concentrated gas cylinder Zephyr can automatically decide and prepare up to 10 levels of concentration, including low and trace levels.

The Zephyr software is integrated in a microcontroller with a touchscreen and no computer is necessary. The software offers unique features such as live calculation of incertitude of final concentration and smart sequencing (based on the number of points, the maximum and minimum concentrations of the range). Lightweight and with a very small footprint the Zephyr is easy to move from one bench to the next, keeping up to 10 methods in memory.

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DIST D-5236 CC Fully Computer Controlled Distil lation System according to ASTM D5236 (Potstill)


ILUDEST Destillationsanlagen GmbH

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Dachdeckerstr. 1, 97297 Waldbüttelbrunn, Germany Tel.: +49 (0) 931 497 090, E-mail:

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