36 Environmental Laboratory
Chromatographs Configured to Safely and Reliably Utilise Hydrogen in Place of Helium Recently at the Pittsburgh
Conference 2013, Bruker (USA) announced their new configurations for the SCION 436 and SCION 456 gas chromatographs supporting the use of hydrogen carrier gas. The continued instability in supply and rising cost of helium has renewed interest and use of hydrogen as the carrier gas for capillary GC applications. Bruker has
answered the concerns and calls for help from its customer base to deal with this disruption and significant increase in cost, by delivering GC systems
capable of utilising hydrogen safely with no impact on data quality or system robustness.
“While using hydrogen as a carrier gas is not new to gas chromatographers, the safer choice of helium has prevailed,” commented Hans van den Heuvel, GC Product Manager. “However, as we saw the supply problem intensifying and cost for helium rising, we knew we needed to step in and provide a safe, reliable, and easy alternative for our customers. Today we launch SCION GC packages that fully support hydrogen as a carrier gas”.
Hydrogen has been used as an alternative to helium, where users are looking for the benefit of increased column flow and reduced analysis time – without a reduction in separation efficiency. This is clearly another driving factor in users’ desire to switch from helium to hydrogen. “Our customers are looking at hydrogen carrier again as they see benefits from reduced analysis time and now lower operating costs. In some regions customers are reporting helium prices increasing as much as 200 percent, while supply reliability decreases substantially” noted Meredith Conoley, Marketing Director for Bruker CAM.
The SCION GC systems have been certified for use with hydrogen carrier by a third-party certification agency. Special firmware, software and hydrogen sensors allow laboratories to confidently operate these systems with hydrogen carrier gas.
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24682pr@reply-direct.com Columns Featuring Solid-Core Particle Technology
Waters Corporation (USA) recently introduced CORTECS Columns, a new family of 1.6 micron solid-core UltraPerformance LC Columns that set a new standard in LC column performance. The higher efficiency brought to chromatography with CORTECS Columns allows laboratories to produce greater amounts of information faster with every chromatographic separation.
Available in C18, C18+ or HILIC chemistries, Waters offers the columns in 30 unique column configurations and is making them available for shipping worldwide. Waters introduced the new columns at HPLC 2013, the 39th Annual Symposium on High Performance Liquid Phase Separations and Related Techniques.
The industrys most significant new column introduction in years, when used together with the low-dispersion Waters ACQUITY UPLC, ACQUITY UPLC I-Class and ACQUITY UPLC H-Class Systems, CORTECS Columns offer previously unattainable levels of performance.
With the introduction of CORTECS columns, Waters is again responding to the need of laboratories for greater resolution, speed and sensitivity, said Michael Yelle, Vice President, Consumables Business Operations, Waters Division. This family of columns represents a leap forward in chromatographic particle design, column hardware, packing technology and, most importantly, overall performance.
CORTECS Column particles feature a solid, impermeable silica core encased in a porous silica outer layer where the interactions between the stationary phase and the analytes occur. The three CORTECS chemistries and their intended uses are: CORTECS C18 Column is a general-purpose, high-efficiency, reversed-phase column offering balanced retention of acids, bases, and neutrals at low and mid-range pH; CORTECS C18+ Column is a general-purpose reversed-phase column with a positively charged surface that delivers excellent peak shape for basic compounds at low pH; CORTECS HILIC Column is designed for the retention of extremely polar analytes while offering orthogonal selectivity versus C18 columns.
The product of more than 40 years of bonding and surface technology know-how and a decade of synthesizing and packing sub- 2-micron particle columns, Waters CORTECS Columns deliver the full benefit of solid-core particle technology.....
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Cell Density Sensor
Endress+Hauser (USA) introduces the OUSBT66 sensor for cell density measurement. Using near-Infrared (NIR) light absorbance technology, the OUSBT66 is a non-intrusive, hygienic sensor that is ideal for real time, in-situ cell production optimisation in life science processes, fermentation biomass measurement and algae growth monitoring for biofuel production.
Rapid and accurate measurement of cell growth activity in cultures is critical to identify the end of the log growth phase and the achieving of stationary phase. The sensor monitors cell density in real time to avoid transitioning to the process death phase.
Biomass concentration is one of the most critically needed measurements in fermentation processes, and it is also one of the most difficult and unreliable values to measure. The sensor provides an easy and reliable method for biomass concentration measurement. Proteins, carbohydrates, nutrients, and lipids produced through algae growth can be converted into biodiesel, green diesel, jet fuels, other fuels, and many other useful products. The sensor offers a unique method for monitoring algae growth levels.
The OUSBT66 sensor uses proven optical sensor technology. The sensor emits light in the NIR region using an LED light source. On the detector side of the sensor the light is filtered to 880 nm. The level of 880 nm light detected by the receiving sensor can be directly correlated to the density of cells in the process.
The body of the hygienic OUSBT66 sensor is constructed of 316L stainless steel, with a polished surface finish Ra<32 µ-inches (<0.76 µm). The only other material in the sensor head is the sapphire sensor windows. The measuring head, which contains the LED light source and optical sensor, is hermetically sealed and capable of withstanding CIP, SIP and autoclaving.
The OUSBT66 can be operated continuously up to 158 ºF (70 ºC), and exposed to temperatures up to 275 ºF (135 ºC) with the lamp turned off for CIP, SIP or steam sterilisation in an autoclave.
The OUSBT66 sensor operates in conjunction with the Memograph CVM40 graphic transmitter and recorder. The CVM40 includes a full colour graphic display. With a built-in web server, fieldbus communications (Profibus and Modbus), USB interface, TCP/IP, OPC and Ethernet, this transmitter will integrate with control systems in numerous ways.
The CVM40 transmitter input/output capability includes six digital input channels and two universal analogue inputs to support a range of measurements. The CVM40 can be field or panel mounted. The CVM40 can also be freely programmed with math functions and linearisation capability to output in a preferred unit of measure.
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24599pr@reply-direct.com SEAL Analytical Invests in UK Technical Resources
In response to a recent surge in sales of automated discrete chemistry analysers and segmented flow analysers, SEAL Analytical (UK) has announced the appointment of Sadie Vick to the position of Technical Support Chemist, based in the UK.
Sadie has an honours degree in Chemistry from the University of Liverpool and has previous experience in technical roles with a laboratory equipment manufacturer, working both in the UK and in China.
Welcoming Sadie to the business, SEAL Analytical President Stuart Smith said: “The success of our company has been built on our ability to develop technologies that precisely meet the needs of our customers and to provide outstanding levels of training and support to ensure optimal performance. A high level of technical competency and the ability to clearly communicate training and support information is therefore essential, and we are delighted to welcome Sadie to the team.”
Following a period of intensive training at SEAL’s US facility, Sadie will return to join the UK’s technical support team during the summer of 2013. In this role, Sadie will provide product demonstrations, technical advice, maintenance and service.
IET Annual Buyers Guide 2013 email:
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