Next Generation pH Measurement Removes the Need for Calibration
The measurement of pH is one of the most common analytical measurements used the world over in applications from process control in the food industry, to research in the pharmaceutical industry, through to effluent monitoring in the environmental sector. In 2002, the total pH measurement instrumentation market, including replacement sensors revenue, was estimated to be on the order of $500m.
The technology currently used for measuring pH is more than seven decades old and suffers from serious operational flaws. Specifically conventional glass electrodes: need constant re-calibration by suitably trained staff using expensive buffers, need careful wet storage and all too frequently break. More recent developments such as solid-state sensors and optical dye based systems all suffer serious limitations including limited pH measurement ranges and low sensitivity.
Researchers at the University of Oxford have developed a complete range of new pH sensors which are cheap and robust to manufacture, can be used over a broad pH range, are sensitive to small changes in pH, can be miniaturised and can be used at high temperatures and pressures; but, most important of all, the new sensors require no calibration.
Media Contact
More Information:
http://www.isis.ox.ac.ukAll latest news from the category: Life Sciences and Chemistry
Articles and reports from the Life Sciences and chemistry area deal with applied and basic research into modern biology, chemistry and human medicine.
Valuable information can be found on a range of life sciences fields including bacteriology, biochemistry, bionics, bioinformatics, biophysics, biotechnology, genetics, geobotany, human biology, marine biology, microbiology, molecular biology, cellular biology, zoology, bioinorganic chemistry, microchemistry and environmental chemistry.
Newest articles
Superradiant atoms could push the boundaries of how precisely time can be measured
Superradiant atoms can help us measure time more precisely than ever. In a new study, researchers from the University of Copenhagen present a new method for measuring the time interval,…
Ion thermoelectric conversion devices for near room temperature
The electrode sheet of the thermoelectric device consists of ionic hydrogel, which is sandwiched between the electrodes to form, and the Prussian blue on the electrode undergoes a redox reaction…
Zap Energy achieves 37-million-degree temperatures in a compact device
New publication reports record electron temperatures for a small-scale, sheared-flow-stabilized Z-pinch fusion device. In the nine decades since humans first produced fusion reactions, only a few fusion technologies have demonstrated…