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Monitoring of catalytic reactions and catalyst preparation processes in liquid phase systems by combined in situ spectroscopic methods
In situ spectroscopic methods such as infrared, Raman and UV/vis spectroscopy are powerful tools to gain insight into reaction mechanisms and catalyst actions in homogeneously catalysed reactions. These methods and combinations of them offer great potential for the real-time monitoring of reactions in the liquid phase, for mechanistic studies as well as process control and kinetics.
Range of OEM spectrometers in UV, Vis and NIR versions, with resolutions down to 0.2 nm in the UV, 0.4 nm in the Vis and 0.6 nm in the NIR and a size of 61 × 64 × 19 mm. The series incorporates Ibsen’s high groove density master transmission gratings which are made from pure fused silica.
A special configuration of the V-700 series of UV/Vis/NIR spectrophotometers with a monochromator with automatically exchanged dual gratings: 1200 lines/mm for the UV/Vis; 600 lines/mm for the NIR. A PMT detector is provided for the UV/Vis and an InGaAs photodiode detector for the NIR. Both gratings and detectors are automatically exchanged within the user-selectable 800–900 nm range with higher resolution settings with enhanced sensitivity in the NIR.
Miniature spectrometer that provides high thermal stability and low unit-to-unit variation whilst maintaining flexibility and configurability. Fully configurable over the 190–1100 nm wavelength range. Features such as interchangeable slits, indicator LEDs and simpler device connectors are included. It has a footprint of 89 × 63 × 34 mm and weight of 265 g.
First Ocean Optics’ spectral device to use a solid-state optical encoder instead of a diffraction grating. Wavelength range is 380–700 nm and available in both OEM and standalone versions, it is suitable for simple absorbance, fluorescence and emissive colour measurements. A range of Spark accessories, including clip-on cuvette holders, diffusers and light sources is compatible with both versions.
Multi-purpose UV/vis spectrophotometer with wavelength scanning from 190 nm to 1100 nm along with intuitive operation, enhanced validation, maintenance and inspection functions. It has seven measurement modes including photometric, spectral, kinetics, DNA/protein and multi-component quantitation. USB flash drives can be connected to the instrument to transfer analysis data.
Portable visible absorption spectrometer with a wavelength range of 430–720 nm. SpectroClick’s instruments use their stacked gratings technology.link.spectroscopyeurope.com/27-02-100
McPherson has announced improvements to their vacuum ultraviolet universal spectrophotometer, an optical test system optimised for emitting samples like phosphors or photo- and electro-luminescent crystals.
Hamamatsu’s C11697MB is a high sensitivity, trigger-compatible Vis/NIR mini-spectrometer module with a spectral range of 320–1000 nm.
Xylem’s YSI has introduced a new line of UV/vis spectrophotometer sensors that operate as part of an IQ SensorNet system.
Shimadzu has introduced the UV-3600 Plus UV/Vis/NIR spectrophotometer, designed for high sensitivity and includes three detectors
The 1.3-m focal length McPherson Model 209 spectrometer with new micro-step drive can make wavelength steps as small as 0.1 pm.
The new Genova Plus life science UV/vis spectrophotometer is now available from Jenway. With dedicated modes for DNA/RNA analysis, pre-programmed methods for protein analysis plus standard spectrophotometer functions, the user-friendly system is optimised for applications in biochemistry, forensic science, genetics, biotechnology and other life science laboratories. Based on the Jenway 73 series, this new instrument incorporates a large graphical display built into the lid of the unit. Icon-driven software and soft-key navigation ensure fast analysis and ease of use. A large internal memory enables over 300 methods to be stored and, for added convenience, results and methods can be saved to a USB memory stick. In addition to dedicated modes for DNA/RNA analysis, protein assays, nucleic acid purity and optical density, the system can also be used as a standard spectrophotometer with measurement modes for photometrics, concentration, multi-wavelength, spectrum scanning, quantitation and kinetics.
BioDrop, a microvolume cuvette from BioDrop, provides a robust and affordable approach to low volume spectroscopy. Its patent-pending design has the same dimensions as a conventional cuvette but is manufactured in two halves that are held together using two magnets. The precision machining ensures that the path length is accurate and its simple optical layout provides high-energy throughput ensuring accurate measurements over a wide dynamic range and only one path length is required for most experiments. It is easy to use, is robust enough to withstand the knocks and falls commonplace in laboratories and its ergonomic design makes it easy to handle, even with wet gloves. Available in 0.5 mm or 0.125 mm path lengths, it can be used to perform UV/vis spectroscopy on sample volumes as low as 1 µL, making it suitable for life scientists measureming DNA, RNA and protein samples.
High-throughput circular dichroism measurement system which automates CD and UV/vis absorbance measurements for large numbers of samples. A third detector option allows simultaneous fluorescence measurement. The flow system coupled with an ASU-800 autosampler provides precise micro sampling and eliminates complications often associated with automated CD measurements.
CW laser-driven Xenon light source for high power in the 170–2100 nm range. It works by focusing a 1000 nm laser through a Xenon bulb, creating a high-intensity plasma, which gives maximum output over a broad spectral range. For deep-UV operation there is optional purging.
A demountable micro-volume bio cell which uses advanced precision micro-machining techniques and materials to produce a high-energy throughput, ultra-low volume direct sampling solution for life science samples.
UV/vis/NIR microscope based on a double-beam scanning spectrophotometer capable of covering 200–2700 nm. There are three different versions: one for the UV/vis, one with a Peltier-cooled detector for the entire 200–2700 nm range and one with an InGaAs detector for measurements between 200 nm and 1700 nm. All models have a user-selectable slit width for variable resolution, as well as selectable circular apertures and an adjustable rectangular aperture for sample area discrimination.
Compact and easy-to-use spectrophotometer with down to 0.3 µL sample size or standard cuvette. Optimised for analysis of proteins/peptides, and DNA/RNA/oligonucleotides. Has built-in computer.
A full spectrum analyser that performs high-quality process gas analysis measurements simultaneously in the UV and IR. It is able to measure up to eight components using the most favourable absorptions in both UV and IR spectral regions, eliminating cross-sensitivity concerns.
Small-form, double-beam instrument covering the wavelength range of 190–1100 nm. Has an eight-position multi-cell holder and a temperature sensor in the cell compartment, enabling the temperature of the sample to be determined as the analysis is made. The spectrophotometer is controlled by an Android-based tablet with touch screen. A range of accessories is available.
A compact personal UV/vis microvolume spectrophotometer. It is small enough to fit into a drawer but powerful enough to help accelerate life science workflows related to sequencing, PCR/qPCR, protein isolation, antibody production and HLA typing.
Portable spectrometer based on CCD detection with features including spectrum scanning, photometric, quantitative and kinetic methods. Embedded software and touch screen interface allow for ease of use and data storage, which can be transferred to a PC via a USB connection. Viewer software provides data interpretation and reporting functionality. The C30M comes with pre-programmed test methods for the Spectroquant.
With the threat of climate change, understanding the workings of our atmosphere is of crucial importance. Ozone is the most important trace gas in the stratosphere and troposphere and it is monitored by both satellite-borne and ground-based instruments. Accurate knowledge of ozone absorption cross-sections is vital for this work and described in this article.
McPherson's new vacuum spectrometers features stainless steel housings and components for ultra-high vacuum applications. The instruments can achieve 10E-6 T vacuum during operation with elastomer seals and feature master polished optics, multiple entrance and exit port locations and high precision wavelength drives. High reflectivity coatings provide up to 78% reflective efficiency at wavelengths as short as 120 nm and other coatings are available for performance in mid-wave and long-wave infrared applications. An f/4.7 aperture ratio enables good light throughput. Fitted for wavelength scanning and imaging applications, the spectrometers can accommodate many commercial back-thinned, windowless 2D CCD and CMOS sensors and many single channel silicon diode or scintillated photomultiplier-type sensors. The instruments are suitable for experiments involving transient or fast plasma physics, astrophysics, material science or laser-matter interaction experiments. They are available in focal lengths of 0.67 m, 1.0 m, 1.3 m and 2 m and can be prepared for high-vacuum and also ultra-high vacuum applications with all metal seals. Various vacuum compatible accessories are available.