Environmental Laboratory


Positive fi rst year for new automated instrument analysing water content in LPG


Globally, refi neries are challenged with corrosion, annually costing our industry billions of US dollars. Substances with corrosive promoting properties have to be monitored and kept to a minimum. Water is one of the most corrosion promoting substances found in refi nery process streams and is found in LPG.


ECH Elektrochemie Halle have developed a new analytical procedure, which has now been incorporated within a new ASTM method for water content in LPG by coulometric Karl Fischer titration, the method removes interferences caused by mercaptans and H2S enabling accurate determination of water content in LPG and all gas types down to 1ppm.


Karl Robertson, from ECH, reports a positive fi rst year for their new automated water content in LPG analyser. He says, “The Aquamax KF Pro LPG has been extremely well received by the market, we’ve exceeded expectations for this fi rst year with many leading petroleum refi neries and third party inspection companies having now taken delivery of their Aquamax KF Pro LPG.”


The unit is fully automated reducing operator time costs associated with water content in LPG analysis and, thanks to a unique sample loop, the titrator can measure all LPG and gas types without having to manually prepare a mass fl ow controller.


Mr Robertson advises, “Most refi nery and third party laboratories are familiar with Karl Fischer technologies but analysing water content in LPG can be challenging. This year’s successes can be attributed to our automated product’s unique ability to perform rapid, precise and reliable analysis, the instrument can make over 125 measurements within a 24 hour period.


Many labs may need to only make 20-30 measurements a day, it’s the rapid delivery of results, reliably accurate to 1 ppm that has caught so much attention. The ability to handle such a high throughput of samples gives us a clear competitive advantage with contract, third party inspection laboratories and the refi neries themselves.”


The light weight and portable design means the instrument can be used at any sample point within the refi nery as well as in the laboratory. Karl Robertson adds, “As well as the benchtop unit, the Aquamax KF Pro LPG has been designed to be integrated within the process environment, we anticipate further sales growth from LPG refi ners adopting the online system in the near future.”


The Aquamax KF Pro LPG has been designed for a number of applications, as well as “water content in LPG”, ECH are experienced in using this technology for LNG, technical gas, DME, gas mixtures and CNG applications.


More information online: ilmt.co/PL/gmgP For More Info, email:


Self-packing of prep or process column by end-users can be a quite challenging. Never the less there are a number of users who like to do their own packing. They appreciate the advantages of the high fl ex- ibility and the speed of turnaround if a column has to be replaced, due to deteriorating performance or increasing back pressure. Although there are signifi cant cost savings in self packing, it is not a universal preference. The solution is to offer both possibilities to the customer: the possibility for self-packing, but also the option to purchase a column packed and qualifi ed ready to use. It is benefi cial to have a similar column design available from small to large scale. Lab scale prep with dynamic/static axial compression (DAC/SAC) are available from 25 mm ID up to process scale with 300 mm ID. The ModCol™ line is available with the two different sized Multipackers®


smaller ModCol Multipacker covers the range, 25, 30, 40 and 50 mm ID, while the larger model covers 50. 70, 101 and 150mm id. For larger columns the Dr Maisch SAC column hardware is available in 100, 200 and 300 mm ID. It is your decision whether to go for ready packed columns or whether you want to pack the columns yourself with the support of real experts and this decision can always be reviewed, depending on how the situation changes. The column hardware will always remain the same.


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which deliver consistently high packing performance (close to zero failure rate) combined with high safety margins. The


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Expanded GC- MS solvents range


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announced Experts in the production of solvents for chromatography, Carlo Erba Reagents has extended its range of solvents for GC. This extended range has been created in order to satisfy the ever increasing requirements in terms of equipment and detection methods, particularly for impurities which, by interaction, can affect the result’s reliability.


In order to provide the best service to its customers in term of quality and diversity of its range, Carlo Erba Reagents now offers a specifi c range dedicated to the GC-MS application with a very high purity and functionality specifi cally tested in GC-MS. More information online: ilmt.co/PL/nojv


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Everything is gonna burn


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Versatile and robust OEM and portable Mid-IR, FTIR gas spectrometers


“ Now there’s a hole in the sky And the ground’s not cold And if the ground’s not cold


” — Pixies - Monkey Gone to Heaven


GASEX spectrometers, from Arcoptix, have been designed for low maintenance, simple, and reliable operation even in harsh environments. Due to its’ lightweight construction (13 kg for the portable unit, 3.8 kg for the OEM version), compact form (450 x 320 x 280 mm for the portable unit, 380 x 180 x 120 mm for the OEM version), robustness and high reliability GASEX is ideal for fi eld measurements, including mobile operation (submarine, vessel, road-vehicle, airplane) applications. GASEX also makes a handy companion in laboratories for any user in a need of fast response on-line gas analysis. A GASEX is simple to use, the fi rst spectrum is obtained within minutes after unpacking. This versatile instrument offers a resolution of 2 cm-1 2-12 microns (830 – 5000 cm-1


, a spectral range of ) and can operate


autonomously, in situ for up to 8 hours.


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www.arcoptix.com info@arcoptix.com (41) 32 731 04 66


www.envirotech-online.com IET September / October 2019


OEM FT-IR FTIR GAS ANALYSERS SPECTROMETERS


Know your ions - overcoming the limits of HPLC with ion chromatography


What’s the difference between High Pressure Liquid Chromatography (HPLC) and Ion Chromatography (IC)? What are the capabilities and limitations of each technique? Knowing these differences can actually make a huge difference. A white paper from Metrohm discusses ‘When HPLC fails’ compares the two methods systematically focusing on the strengths of ion chromatography.


HPLC is one of the most powerful analytical techniques in the modern laboratory. From research to manufacturing to legal, it is widely used in many sectors. However, there are some inherent limitations. Ionic and polar compounds pose a challenge. So do organic acids. Moreover, some analytes, such as fl uoride and chloride, are not active in the UV range, making it impossible to determine them with a UV detector, the detection technique most commonly used with HPLC. Ion chromatography (IC), on the other hand, is ideal for the separation and detection of ions and polar molecules, both organic and inorganic. This makes IC the ideal extension of HPLC to increase the analytical capabilities of the modern laboratory greatly.


Over the last 30+ years, Metrohm has made Ion Chromatography a powerful tool for both research and routine analysis. Laboratories in the many sectors in particular benefi t not only from the method itself but from many automated inline sample preparation and injection techniques. Samples with a high load of particles (e.g., wastewater), solid and even gaseous samples can be analysed fully automatically down to the µg/L range with superior reproducibility. Hundreds of IC applications are available free of charge from the Metrohm Application Finder.


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45


SWISS TECHNOLOGY AND EFFICIENCY


FOR THE LAB AND FIELD


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