Water/Wastewater 13
World’s First Triple Isotope Analyser for Water
Fast and Flexible Multi-Parameter Measurement
The YSI IQ Sensor Net system from Xylem Analytics (USA) offers unmatched adaptability and sustainability across a broad spectrum of online applications in wastewater monitoring. Its modular nature combined with intelligent, self recognition digital sensors provides the user with the flexibility to specify any combination of parameters and meter functions that suit a wide range of applications. The single system provides highly reliable measurements of pH/ORP, conductivity, dissolved oxygen (DO), temperature, turbidity/TSS, ammonium, nitrate and chemical oxygen demand (COD). Up to 20 sensors measuring any combination of 16 parameters can be monitored, logged and transmitted from a single controller that can display data from one, four or multiple sensors simultaneously.
The YSI IQ Sensor Net system delivers numerous cost saving benefits. It eliminates the need for sample preparation, as well as removing lag-time between sampling and measurement, significantly speeding up processes and offering real- time control. Also, the sensors operate for long periods requiring minimal maintenance. In addition, plug-and-play connection to any IQ sensor offers considerable time-savings and the system is expandable to enable more sensors and components to be incorporated in the future.
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Los Gatos Research (USA) has introduced the world’s first triple isotope analyser for direct simultaneous measurement of 17O, 18O, and 2H ratios in liquid water and water vapor samples. The IWA-46EP is capable of automated, continuous or batch operation, and delivers isotopic sensitivity and precision comparable to reference isotope ratio mass spectrometer (IRMS) laboratories. And, like other LGR EP-series analysers, this new instrument incorporates proprietary thermal control, enabling accurate and precise measurements over a wide range of ambient temperatures (0 – 45°C). Together with its rugged, compact packaging, this makes the IWA 46EP ideal for remote and even airborne operation, as well as for routine laboratory use.
Traditional water isotope analysis performed using IRMS technology requires extensive sample preparation and a skilled, experienced operator. Oxygen and hydrogen ratios are separately processed, with 17O being particularly cumbersome for IRMS. In contrast, the IWA-46EP measures all three isotopes simultaneously, directly from water-based samples, including seawater and bodily fluids. Moreover, the measurement process is automated, requiring minimal operator skill. And unlike IRMS, the IWA-46EP needs neither expensive consumables nor frequent calibration.
Applications for the IWA-46EP include atmospheric chemistry, hydrology, water cycle studies and medical diagnostics, where water isotopes can be used to determine metabolic efficiency and energy expenditure.
“We have been using a LGR isotope analyser for several years to measure 18O and 2H ratios in waters from plant leaves and stems, as well as from soil,” states Tim Griffis, Assoc. Professor at the University of Minnesota. “We use these types of data in conjunction with
isotopic CO2 data to investigate linkages between hydrology and the carbon cycle. The ability to simultaneously measure 17O could add important additional insights regarding atmospheric moisture sources since the oxygen-17 excess appears to be influenced by kinetic fractionation during evaporation and is sensitive to humidity conditions in the source region.”
LGR precision gas analysers are based on the company’s patented Off-axis Integrated Cavity Output Spectroscopy (OA-ICOS) technology, a fourth generation, cavity-enhanced laser absorption technique. This unique approach is both more rugged and more precise than earlier cavity-enhanced techniques, such as conventional cavity ringdown spectroscopy (CRDS), because the performance of OA-ICOS does not need ultra-precise alignment or sub nanometer stability of its optics, or a high degree of thermal control. This ensures higher absolute accuracy, longer maintenance intervals, higher reliability and reduced cost of ownership.
Reader Reply Card No. 52 Reader Reply Card No. 51 QUANTOFIX® Relax Automated Reader for QUANTOFIX® Test Strips
In January 2012, MACHEREY-NAGEL launched the new QUANTOFIX® Relax test strip reader. This new instrument is a revolutionary step in test strip analysis. With the new system, MACHEREY-NAGEL offers an entirely objective way to read QUANTOFIX® test strips, making the system particularly suitable if results are critical to decision making. The instrument simplifies testing procedures and the decision processes by eliminating the subjectivity of visual readings and by providing higher accuracy. Especially if large numbers of strips are to be tested, the QUANTOFIX® Relax helps and supports with easy data administration and quick testing procedures. Additionally, the QUANTOFIX® Relax allows users to get actual quantitative results – no gradation and estimation of in-between values are necessary.
The QUANTOFIX® Relax can change the way test strips users work and test. The system enables them to focus on their core processes and is the perfect tool for anyone’s testing procedures.
The QUANTOFIX® Relax is designed for optimised usability to provide customers with higher efficiency, time and cost-savings.
The inbuilt auto-start function enables measurements without pressing any buttons, thus making test strips analysis quick, clean and particularly safe for the user. The bright graphic display shows all relevant information at one glance and can be navigated intuitively using the touch screen and the clear menu guidance.
Of course, the QUANTOFIX® Relax features all standard interface options, such as an RS232 and USB connection for easy data transfer and update. Together with the memory function for up to 200 results, the instrument provides a complete package for data administration, giving users a high level of confidence and safety.
Another unique feature of the QUANTOFIX® Relax is the built in printer. All results can be printed directly after measurements or afterwards from the memory. Users can file all results and document their measurements without manual transcription, thus significantly improving quality control process in terms of speed, convenience and reliability.
The following QUANTOFIX® tests can currently be run on the instrument: Ammonium, Ascorbic acid, Nitrite, Peracetic acid 50 / 500 / 2000, Peroxide 25 / 100 / 1000. Additionally the instrument can read our pH-Fix 6.0-10.0 pH test strip. More strips will be added to the instrument over time.
Of course, switching between tests is simple and fast, as 5 tests can be defined in an easy to access favourites menu. Users can therefore change tests within seconds, increasing user friendliness and time savings even more.
An additional benefit of the QUANTOFIX® Relax is that it can read the normal QUANTOFIX® test strips on the instrument. No special strips are required and no extra costs are hidden anywhere. Thus, the system becomes highly transparent in terms of costs and allows customers to plan efficiently.
The new QUANTOFIX® Relax from MACHEREY-NAGEL is the only system on the market, which can offer such a high level of accuracy in test strip analysis paired with extraordinary user-friendliness. The instrument provides customers with a new level of analytical reliability and convenience, while making process and quality controls more effective. All in all, this brand new tool will therefore increase savings, improve cost effectiveness and lift test strip analysis to a whole new level.
For more information on the QUANTOFIX® Relax, visit
www.mn-net.com/quantofixrelax and find out more about our revolution in test strip analysis. Reader Reply Card No. 50 49
www.envirotech-online.com AET Annual Buyers’ Guide 2012
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