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Analytical Instrumentation Analytical Solutions for the Petrochemical Industry


The success of the oil industry depends upon safe, reliable and effi cient processes to ensure that consumers receive a consistent fl ow of high-quality products. For decades, Sigma-Aldrich (USA) has provided the highest quality of reliable analytical solutions to help researchers, process managers and quality analysts meet their measurement challenges. From characterising raw crude oil and natural gas, to monitoring the production of refi ned chemicals and determining the quality of alternative fuels, Sigma-Aldrich offers a broad range of products to the energy and chemical industries.


Sigma-Aldrich offer innovative product solutions to monitor the quality of petrochemical products and to comply with industry standards – in the laboratory and online in the process environment. Our petrochemical analysis solutions include moisture determination, speciality gas chromatography (GC) columns that quantitate trace contaminants in petrochemical


streams, sample preparation devices and analytical standards to ensure accurate analysis of the diverse components of a sample.


For sample preparation, choose from a wide range of products, including those for solid phase microextraction with SPME Fast Fit Assemblies (FFA), a new confi guration of SPME fi bres that allow the automated exchange of SPME fi bres by the Multi Fibre EXchange (MFX) System on a CTC CombiPAL type autosampler, and solid phase extraction (spe) for aliphatic/aromatic hydrocarbon split and total petroleum hydrocarbons (TPH), as well as polychlorinated biphenyl (PCB) analysis in waste oils.


Sigma-Aldrich offers a comprehensive line of pure standards (neats) and also single- and multi-component petrochemical solutions suitable for all analytical methods. Many of their standards are formulated to meet the prescribed recommendations of ASTM, or international bodies (including DIN, EN and ISO), as well as other international organisations. Neats and solutions on offer include : ASTMR Petroleum Standards, Gasoline Range Organics (GRO), Biodiesel, BTEX, DIN Standards, Diesel Range Organics (DRO), Bioethanol, Olefi ns, Paraffi ns, Gas Calibration Standards, Fuel Oil, Inorganic standards for AAS, ICP and XRF, Underground Storage Tank (UST), Hydrocarbons, Jet Fuel, Petroleum Refi nery Reformates, GPA Standards, PNA/PONA/PIANO Mixtures, Wear Metal Standards, Organometallic Oil Solutions and Sulphur Standards.


For safety applications, such as the decommissioning of oil rigs, when workers can be exposed to


isocyanates during the welding processes, Sigma-Aldrich have specially developed the ASSET EZ4-NCO Dry Sampler to effectively monitor occupational exposure to isocyanates and to check if personal protection equipment is adequate. Also available are air sampling products conforming to ASTM, NIOSH, OSHA, US EPA, California Air Resources Board (CARB) and European methods - the range includes active, passive and whole air samplers.


To fi nd out more, please request a brochure from Sigma-Aldrich. 31232pr@reply-direct.com


For More Info, email: email:


For More Info, email: email:


Dutch viscometry specialist Omnitek BV (the Netherlands) provides a unique instrument with the S-fl ow 3000 VI : a fully automatic, double bath Houillon viscometry system, containing 4 tubes in each bath. Based on the same principles as the single bath version, it offers very quick analysis (in excess of 120 samples per hour), small sample size (only 0.5 ml) and very low solvent consumption. In addition, the S-fl ow 3000 VI features a high resolution touch screen, automatic Viscosity Index Calculation and optional duplo measurement capability, allowing the same sample to be measured twice in one run.


The line of S-fl ow viscometry systems have been the instrument of choice for many labs, with over 500 units installed worldwide. Supported by a strong network of dedicated distributors, Omnitek continues to expand the range of models to cater to a wide variety of applications.


For More Info, email: email:


Revolution in Oil in Water Measurement


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Since 1980 the ASTM D3921 infrared method was the standard method for the determination of total petroleum hydrocarbon (TPH) concentrations in water. As the extraction solvent the ozone layer depleting chemical Freon 113 is used. In 1989 the phasing out of such chemicals was decided by the Montreal protocol to save the earth’s ozone layer. Therefore the infrared test methods using CFC solvents had to be replaced by time-consuming gravimetric methods (e.g. EPA 1664A) or complex gas chromatography (e.g. ISO 9377-2).


In February 2013 the outdated ASTM D3291 was fi nally withdrawn to account for its harmfulness for the environment. But with


the new ASTM D7678, infrared spectroscopy undergoes a revival since it uses cheap, easily available and non-harmful solvents (Cyclohexane or Cyclopentane) for sample preparation.


The success of this new ASTM D7678 standard is based on a new era of light sources for the mid-infrared spectral region: The Quantum Cascade Laser (QCL). ERACHECK a portable stand-alone analyser by eralytics (Austria) uses such a QCL in an innovative and patented measurement assembly. It detects TPH concentrations between 0.5 and 2000 ppm with an unmatched repeatability of <0.2 ppm correlating to ASTM D3921 and D7066. Offering latest communication technologies it can be fully integrated in a LIMS system, data can be saved to a USB fl ash drive or printed directly.


For More Info, email: email:


For More Info, email: email:


For More Info, email: email:


For More Info, email: email:


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Double Bath Houillon Viscometer


When contacting companies directly about their products and services, please let them know where you found them!


2114ad@reply-direct.com AUGUST / SEPTEMBER • WWW.PETRO-ONLINE.COM Thanks, PIN.


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