Spectroscopy Focus
Compact FTIR module
The Midac Illuminator is a compact (16” x 9” x 8”) FTIR module that integrates well with a variety of sample interfaces in virtually any configuration. Inside each Illuminator is an IR source and interferometer, which provide a collimated output beam. The rugged module can be coupled with any sampling accessory equipped with its own IR detector to create a compact dedicated analyser.
Alternatively, the Illuminator’s internal IR source can be replaced with a detector module for emissions work, or for use with an external IR source. The unit can be powered by a 12 volt battery as an alternative
to standard AC power, enabling use in remote or field applications.
Data collection, post processing and report generation are provided by Midac's AutoQuant Pro real-time multi-component quantitative analysis package, or the Essential FTIR (EFTIR) general purpose spectroscopy software.
Circle no. 516
New Triple Quadrupole GC/MS Offers Greater Precision, Selectivity and Sensitivity
Agilent Technologies, Inc introduced the 7000B Triple Quadrupole Gas Chromatograph/Mass Spectrometer (GC/MS/MS), delivering high confidence in ultra-trace level results, while shortening analysis times for target compounds in complex samples.
The Agilent 7000B provides femtogram-level sensitivity for analyses such as pesticides, PAHs, PCBs, pyrethroids, THC, and steroids in food, environmental, pharmaceutical, and forensic matrices.
The 7000B extends the performance and capabilities of the 7000 Series launched in June 2008 with the introduction of more sensitive electron ionisation (EI) source and a new chemical ionisation (CI) source. All of these improvements are reverse compatible to the 7000A.
The new high-sensitivity EI source sends more precursor ions to the mass analyser, increasing sensitivity and precision. Source temperature is programmable up to 350oC to accommodate complex matrices. High temperature also means less cleaning, reducing labour requirements and increasing uptime. The source is fabricated of solid inert materials, rather than coated, for durability and stable performance.
The new positive and negative CI source generates ideal precursor ions for MS/MS. Based on the proven CI source of the single quadrupole Agilent 5975C GC/MSD, this PCI/NCI source is built to deliver high sensitivity and trouble-free CI operation.
The 7000B MS/MS achieves ultra-fast multiple reaction monitoring (MRM) speed of 500 per second without any ‘cross talk’ between consecutive transitions. High-speed MRM enables users to determine more compounds per ion group than with comparable instruments.
Agilent has enhanced the capabilities of the 7890 GC with a new multi-mode inlet and new high-efficiency backflush tools. As compared to traditional column bakeout, backflushing high-boiling matrix extends column life, shortens analysis time, and reduces source maintenance.
For high-throughput analyses, the Agilent 7000B can be ordered with the Agilent 7693A Automatic Liquid Sampler (ALS) that automates many bench tasks. The Agilent 7000B GC/MS/MS runs on MassHunter Workstation software, the powerful, intuitive system for instrument control, data acquisition, qualitative and quantitative data analysis, and reporting.
Circle no. 517
Extended Spectral Range with High Optical Resolution Fits Project Needs and Budget
Miniature spectroscopy pioneer Ocean Optics has expanded the wavelength capabilities of several of its popular miniature fibre optic spectrometers. The XR-Series, available for the USB2000+, JAZ-EL2000, and USB4000, covers all wavelengths from ~200-1050nm with the convenience and affordability of a single, monolithic spectrometer.
The new XR-1 grating option developed by Ocean Optics overcomes the traditional challenges of providing broad UV-NIR coverage in a single miniature spectro - meter. With a 500 lines/mm density, the
grating delivers high performance at a budget-friendly price, without increasing the system footprint. The XR-1 grating is available pre-configured in the USB2000+, JAZ-EL2000, and USB4000 and may also be added as an option to custom-built systems.
The XR-Series spectrometers deliver an optical resolution of ~2.0 nm (FWHM). Ocean Optics’ proprietary order-sorting filter is applied directly to the detector to eliminate second- and third-order effects. The 25µm slit on the preconfigured units delivers good optical resolution for most applications. XR-Series spectrometers are a convenient single-instrument solution for setups where both UV-VIS and VIS-NIR measurements are needed, and are well suited to measurement of samples with response across the entire wavelength range, such as solar irradiance, atomic emission line measurement and some plasma applications.
Circle no. 518
Single Molecule Force Spectroscopy Studies
Circle no. 519
JPK Instruments is happy to announce the latest member of their nanotechnology characterisation systems family: the ForceRobot® - the new standard in single molecule force spectroscopy.
300
The key to obtaining meaningful results from single molecule techniques such as force spectroscopy is the statistical management of the results. This is where the new ForceRobot®
300 technology
delivers the solution. The automated setup and continuous adjustments provide improvements in the efficiency of data collection while the integration of optical techniques allows targeted measurements where the molecules of interest are located. These factors, combined with the highest data quality and stability, open the field of single molecule force spectroscopy to a new level of results.
The key to the system is the incorporation of intelligent software for experimental design, data acquisition and evaluation. Tens of thousands of force curves may be generated and evaluated in a matter of hours. To produce high quality curves requires an exceptional instrument with the lowest noise floor and the most rigid mechanical design. The highest accuracy and stability of the instrument is ensured by integrated capacitive position sensors with drift being minimised thorough utilising a symmetrical system design.
The system may be operated in a stand-alone mode to give maximum access and flexibility to the sample. Alternatively, it may be mounted on top of an inverted optical microscope to enable simultaneous force spectroscopy and fluorescence microscopy. Both versions are available with a choice of positioning stage. While the basic motorised stage will provide positioning to better than one micron, the Precision Mapping Stage uses closed-loop control with noise levels to better than 0.3nm with positioning to about 1nm.
Like all JPK’s advanced instruments, the ForceRobot® 300 has many
further options for fluidics and temperature control to enable the most reproducible results.
Circle no. 520
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