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New Imaging ATR Accessory for Fast and Reliable FT-IR Chemical Imaging Analyses
MASS SPECTROMETRY & SPECTROSCOPY
New LCMS Certified Vials for the Analytical Laboratory
Waters Corporation has introduced TruView™ LCMS Certified Vials, a new line of low-adsorption sample vials certified for LC/MS/MS analyses where analyte concentrations are on the order of ng/mL or pg/mL and where analytical sensitivity and accuracy are critical.
"As LC/MS/MS technology evolves and levels of detection approach or exceed the part-per-trillion range, our customers are demanding low adsorption vials that won’t compromise their results,” said Mike Yelle, Senior Director, Chemistry Commercial Operations, Waters Division. “Our TruView glass vials are manufactured and certified to perform better than any commercially available glass autosampler vial.”
TruView vials are manufactured under tight controls using a proprietary process that limits the concentration of free ions on the surface of the glass dramatically lowering analyte adsorption. Normally during the manufacture of glass vials, free ions are deposited on the surface. Problems occur when the ions are freed from the surface and enter the sample raising the pH and exposing ion exchange sites on the glass to sample analytes that can bind to the glass. The longer a vial awaits aspiration and injection of its contents, the greater the analyte adsorption.
Waters TruView LCMS Certified Vials are now available from Waters worldwide. Circle no. 322
Fast-response Mass Spectrometer
Thermo Fisher Scientific, Inc recently announced the launch of a new imaging attenuated total reflectance (ATR) accessory offering enhanced spatial resolution and high speed data acquisition capabilities for Fourier transform infrared (FT-IR) chemical imaging applications. The Thermo Scientific imaging ATR accessory has been designed to seamlessly and effortlessly integrate with the Thermo Scientific range of FT-IR microscopes to enable efficient, fast and reliable chemical imaging of challenging samples. This is of particular benefit to manufacturers of composite structures, paper products, pharmaceutical dosage forms, biological tissues, polymer films and coatings.
ATR is a popular sampling technique for infrared spectroscopy allowing direct contact sampling of solids and liquids without further preparation. When coupled with an FT-IR microscope, ATR provides a unique capability for exploring the microscopic structure of heterogeneous samples. Single point ATR mapping, while more flexible in terms of total image size and dimensions, requires many separate contact points to build up the imaging data set. The Thermo Scientific imaging ATR accessory provides a more rapid method because it requires the sample to be compressed only once against an extended area of contact. Data collection may then proceed at the same speed as normal transmission or external reflectance experiments.
The new imaging ATR accessory greatly simplifies the task of obtaining high quality infrared spectra in cases of samples that are difficult to prepare for transmission analysis. Observable features in specimens, such as defects, particles, fibres or inks, may be effectively analysed with spatial resolution improved by a factor of four relative to transmission measurements. The accessory quickly snaps into the sample holder feature of Thermo Scientific Nicolet iN10, Nicolet iN10 MX and Nicolet Continuµm microscopes in a matter of seconds without the need of tools. All standard microscope optics remain available, thus avoiding any concerns of alignment or down time when switching between sampling modes. Transmission, external reflection, micro-ATR and imaging-ATR capabilities are all immediately available to address the requirements of any FT-IR microscopy application.
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The 3F-series of quadruple mass spectrometers from Hiden Analytical now feature direct digital signal detection for our fastest response and most sensitive detection levels, addressing the needs of the researcher operating in the UHV/XHV vacuum regime through to specialised fast-event gaseous studies at pressures to atmosphere and beyond.
The system integrates triple-stage mass filter technology with digital data acquisition by direct positive ion counting (pulse counting) to combine a continuous detection range of seven full decades with a detection rate from just 1 ion per second and abundance sensitivity measurements to the parts per billion regime. The integral data accumulation mode enables operation with time-functioned data acquisition for suppression of fundamental ion statistical noise. Vacuum partial pressures to 5x10E-15 mbar are detectable.
Ionisation source options are available for conventional residual gas
analysis, for surface desorption studies and for molecular/laser beam measurements. Single-stage and multiple-stage pressure reduction systems are available for operation at higher pressures beyond the UHV range. Requirements for measurement of externally generated positive ions and for measurement of both positive and negative ions are addressed by the alternative EP/EQ series. A custom design service is available for specialised applications.
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Unique Portable NIR Solution for Food and Feed
Analytik announce a ‘Ready to go’ NIR analyser for the food and feed industry combining a high-performance, portable AgriSpec spectrometer with pre-loaded INGOT calibrations from Aunir for the UK and Ireland markets.
Using real time NIR analysis; essential parameters for the milling, grain, animal feeds and food processing industries such as moisture, protein, ash, fat, fibre and starch can be determined in seconds - as materials are received, and without any sample
preparation - ensuring processing decisions can be made immediately without sending samples to the laboratory.
Over the last 20 years the food and feed industry has invested heavily in NIR
instrumentation and NIR is now a tried and trusted technique in the quality laboratory. The success of Aunir’s INGOT product – bringing ‘off the shelf’ NIR calibrations to the industry has meant NIR analysis can be implemented without time consuming in-house development of NIR calibrations with the subsequent expensive primary chemistry testing this requires. As a result AgriSpec with Aunir calibrations is ‘ready to go’ from day one.
Using a NIR instrument in the laboratory or in a protected environment such as a store room fails to capitalise on the efficiency of the technique, as although analysis takes only a few seconds, turnaround is slowed as sub-samples are required to be collected, packed and queued before analysis. Uniquely, the combined offering from ASD and Aunir is high quality results from a mobile analyser suitable for use in the warehouse or receiving area as required; saving time and money. With rugged styling and dual battery/mains power, the AgriSpec NIR analyser is designed to be used in the field by non-technical operators.
AgriSpec combines an ASD research grade near infrared (NIR) spectrometer with easy to use reflectance accessories and intuitive software. The high resolution and extended wavelength range ensures full, high quality NIR analysis for every sample; in-house calibrations developed on other NIR instruments may be
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LAB ASIA - NOVEMBER/DECEMBER 2011 - MASS SPECTROMETRY & SPECTROSCOPY
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