NIR analyzer, NIR spectometer, NIR reflectance, FOSS, chemical analyzer, infrared, near-infrared

NIR Technology

2010-06-26T20:50:00.001-07:00

NIR spectroscopy or Near Infra Red Technology is a tool used to precisely analyze food components and the prediction of functionality parameters. This tool is very useful for the Food technologists at any level. The future uses of NIR technology include grading and classifying materials and organoleptic-type categorization of materials and foods. NIR technology focuses on the development of technical knowledge and practical applications of this spectroscopic technique. NIR instruments were initially developed to conduct grain quality analysis in the field at low cost.

NIR technology procedure includes the use of probes or flow cells for a direct investigation of the most relevant processes to analyze substances that contain CH-, NH-, OH-, SH- or -C=O groups in a concentration range of approximately 1% and above.

NIR instruments can be used to analyze both solid and liquid samples (during extreme conditions as well) with the development of modern probes and transmission cells. The use of NIR instruments does not require sampling as necessary in the analysis performed by the qualified technicians. The spectroscopic information is easily transportable via fiber optics over distances of more than 100m to the instrument.

At present, the NIR instruments can be used to analyzer products in the field, laboratory and on line. NIR Technology Systems are being used to analyze the quality of food, agriculture, cosmetics, and pharmaceuticals, chemical, plastic and polymers. The NIR Technology Systems use state of the art gratings and diode array detection for analysis. These analyzers come with the software which helps in analyzing the qualitative and quantitative parameters using the partial least squares calculation.

NIR instruments are also used by the defense departments to prevent detection by NIR Image Converters which helps in not detecting the body temperature, but help in detecting the infrared radiation variances.

The NIR technology uses infrared radiation which is basically electromagnetic radiations whose wavelength is longer than that of the visible light, but shorter than that of terahertz radiation.

If we consider the Planck's law, it states that the objects or surfaces give out an electromagnetic radiation whose intensity and spectral distribution depends on the body's temperature. Many detectors for the near-infrared spectral range of 0.8µm to 1.1µm can detect thermal radiation from temperatures of approx. 300°C on surfaces. This temperature cannot be seen by the human eye .

NIR technology can also be used to detect electromagnetic radiations just like an alarm system can detect smoke. Scattering of light by aerosols in this wavelength range is even less than in the visible range. Therefore in many situations open fires can be localized through smoke when it is not possible with the human eye.

Alston is an eminent analyst and writer which are writing about NIR analyzer. For more info visit at http://www.foss-nirsystems.com.

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FOSS - NIR Analyser

2010-06-20T22:31:00.000-07:00

FOSS is different from others in offering a range of dedicated analytical solutions based on both indirect and reference methods. FOSS NIR provides analysis and control throughout the production process, from raw material to finished product and from routine analysis to at-line and in-line process control.

FOSS focused analytical solutions are used in the Dairy, Wine, Edible oils, Confectionery, Pet food, Pharmaceuticals, Chemicals, Grain, Beer, Feed and Forage and Milling industries.

FOSS NIR is used in near infrared spectroscopy in solutions like infratec, food scan and wine scan.

The Dual X-ray technology, as used in MeatMaster to measure the fat content of fresh, frozen, boxed and loose meat. With near infrared interactance this technology is also used for simplifying and speeding up traditional microbiological analysis, as used in MicroFoss.

Advanced calibration technologies within FOSS NIR, like PLS and ANN (Artificial Neural Network) provide simple and reliable solutions for highly complex analytical tasks.

The FT NIR technology is also used as part of the automated wet chemical analysis and automated Image Analysis for visual grain inspection, as used in Cervitec and Rice Analyzer

The FT NIR technology uses software that facilitates analysis of measurement results and that helps to monitor and control production processes.

FOSS NIR systems offer a new probe for monitoring of mammalian cell culture growth media. With path length optimized for culture media, this novel design is sterilizable-in-place (SIP). The small diameter probe design is easily adapted for use in bench top bioreactors and for scale up to pilot plant and manufacturing reactors.

Nine bioprocess probes multiply to form one FOSS XDS Process Analytics Near-Infrared (NIR) Analyzer. Our analyzers track key low concentration analytes in the culture growth media, enabling optimization of the fermentation. Feedback control is available through digital protocols.

FOSS NIR system is the world's leading manufacturers of near infrared analytical instruments and consists of a complete range of rapid scanning, near-infrared spectrophotometers for laboratory and process applications.

The near infrared interactance is also very useful in measuring the body fat. With the near infrared interactance fiber optic probe is attached to a digital analyzer which measures the tissue composition and can measure the fat and water content in various parts of the body. The most common body part on which this near infrared interactance methodology is used is the biceps for estimating body fat using the NIR method. The NIR light goes through the tissues and is reflected off the bone back to the detector. The NIR data is entered into a prediction equation with the person's height, weight, frame size, and level of activity to estimate the percent body fat.

Alston is an eminent analyst and writer which are writing about NIR analyzer. For more info visit at http://www.foss-nirsystems.com.

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NIR Spectrometer

2010-06-15T22:29:00.000-07:00

NIR spectrometers are the new generation of Fourier Transform near Infrared (FT-NIR) spectrometer. These are the first industry hardened FT-NIR systems that are strong enough to withstand the harsh conditions.

NIR spectrometer uses the state-of-the-art optics for exceptional sensitivity and stability. There is continuous improvement in the designs and this provides consistent high quality results with less downtime, direct methods transfer and probable new applications. These NIR instruments can be used both in the lab and the factory; thus eliminating the need for new instrument during integration with the process control system.

In addition, the same NIR instrument can go directly from the lab to the factory, and this removes the need for a new instrument when your method is ready for integration into your process control system. These can further be integrated easily because of the Full support of industry standard communication protocols available.

The most successful NIR instrument is the Raman spectrometer which was developed for process control and automated lab applications. The system emphasize an On-Axis spectrograph, optimized for Raman spectroscopy and one standard grating covering the most widely used Raman signature range. The patent pending curve slit correction for aberration free imaging, low noise CCD and innovative technology in signal processing result in excellent signal to noise ratio and high performance.

Many NIR instrument come with no moving parts, being free from mechanical wear it requires low maintenance. The integrated diode laser provides 532 nm or 785 nm with different power levels available.

The system comes equipped with a Class 3 light-tight safety enclosed with interlocks in 19" rack
configuration.

The NIR spectrometer has taken NIR spectroscopy to new heights and is compatible for a choice of laboratory, site glass and process immersion probes, allowing real time process monitoring from a remote location. The Raman UniLab Research is a high sensitivity device designed to utilize both large illumination and collection areas. The large illumination design reduces the susceptibility of sample misalignment as well as decreases the effects of heterogeneity issues of the sample, resulting in superior averaging capability.

NIR spectroscopy utilizes Sure_Cal calibration technology, a method for achieving a standard Raman spectrum that has both short and long term precision and accuracy. The Sure_Cal technology allows for the collection of the standard spectrum independent of any instrument instabilities. The Raman spectrum from the sample, the laser/neon spectrum and the neon spectrum are collected simultaneously.

The NIR instruments are also much easier to implement, operate, and maintain. The NIR spectrometer is a compact fibered spectrometer able to measure from 900nm to 2600nm or from 2000nm to 4500nm with a resolution of 8cm-1 (or about 1-5 nm). This world known unique scanning Fourier Transform Spectrometer (FTS) uses an exclusive actuator fabricated thanks to modern micro machining technology. The spectrometer needs only a single detector that assures highest dynamic range and allows attractive pricing.

Alston is an eminent analyst and writer which are writing about NIR analyzer. For more info visit at http://www.foss-nirsystems.com

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NIR Reflectance

2010-06-10T22:28:00.000-07:00

The purpose of NIR reflectance is to verify if the Near-Infrared (NIR) spectroscopic method could be applied to the identification of a variety of different raw materials for the purpose of quality control.

Near infrared reflectance is now widely used for the rapid analysis of many agricultural and food products for protein, moisture, oil, starch, sucrose, fiber, grain texture and lysine. Research has shown that the technique can also be used for the prediction of malting quality of barley, baking quality of wheat and measurement of the degree of starch damage in flour.

The technique of near infrared reflectance uses very small differences in absorption of NIR radiation at wavelengths corresponding to overtones and combination's of fundamental IR frequencies of chemical functional groups that are characteristic of particular analytes. Complex regression mathematics is used to transform these absorption measurements into an analytical result.

Near infrared reflectance spectroscopy (NIRS) is an accurate and rapid alternative to wet chemistry procedures for determining concentrations of major classes of chemical compounds in organic materials, such as plant foliage. The process utilizes reflectance signals resulting from bending and stretching vibrations in molecular bonds between carbon, nitrogen, hydrogen, and oxygen. Calibration is required to mix the spectral response of each sample at individual wavelengths to known chemical concentrations from laboratory analyses.

In near infrared reflectance, Nitrogen, lignin, and cellulose concentrations for woody plant foliage: green leaf, leaf litter, and decomposing leaf litter can be measured in the laboratory according to procedures. The sample preparation for near infrared reflectance can involve drying and grinding to a uniform particle size. Diffuse reflectance spectral data were acquired using Microsystems 6500 monochromatic with a spinning cup module, scanning at wavelengths from 400 to 2498 nm with a bandwidth of 10 nm. Calibration equations were developed by using partial least squares regression on first difference transformation of the absorbency data for the entire spectral range (Bolster et al., in press).

In near infrared reflectance spectroscopy the calibration equations for woody plant foliage are used for prediction of nitrogen, lignin, and cellulose concentrations in unknown samples. Precision of equation for prediction of unknown samples basically depends on whether the range of variation affecting the chemical and physical properties of the unknown samples is represented in the calibration samples. Universal equations developed for broad, or infinite populations is used for a wide range of samples. The importance of universal equations is to increase the value of NIRS for the study of large-scale ecosystem processes.

Alston is an eminent analyst and writer which are writing about NIR analyzer. For more info visit at http://www.foss-nirsystems.com

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Chemical Analyzer

2010-06-05T22:27:00.000-07:00

Near infra-red (NIR) analysis is widely used for the rapid analysis of many agricultural and food products for protein, moisture, oil, starch, sucrose, fiber, grain texture and lysine. Research has shown that the technique can also be used for the prediction of malting quality of barley, baking quality of wheat and measurement of the degree of starch damage in flour.

The technique of NIR analysis uses very small differences in absorption of NIR radiation at wavelengths corresponding to overtones and combinations of fundamental IR frequencies of chemical functional groups that are characteristic of particular substances. Complex regression mathematics is used to transform these absorption measurements into an analytical result.

NIR analyser is a next-generation product robust, reliable, and consistently accurate. The NIR analyzer is also much easier to implement, operate, and maintain.

A NIR analyzer typically has a rotating sample platter which provides accurate analysis of ungrounded or partially ground materials by simply filling a cup and placing it on the window or analysis can also be done in a static mode. Samples can also be reviewed through a variety of sample cups, Petri dishes, beakers, or bags.

NIR analysers are available in four wavelength configurations to give complete coverage of the NIR region. Covering the entire wavelength range is vital for accurate results.

The chemical analyzer can scan the NIR region up to 2500nm. This allows calibrations and databases from monochromator based systems of Bran+Luebbe, NIRSystems, Foss, Bruker, ABB Bomem, and Thermo.

This chemical analyzer can also scan the wavelength range of 1200-2400 nm. This wavelength range covers the same range used by older NIR filter spectrometers from Technicon, Bran+Luebbe, Perten, and DICKEY-john, meaning that calibrations from these systems can easily be transferred to other spectrometers or chemical analyzers.

The NIR (Near Infrared) analyzer is the latest technology for analyzing solid and liquid chemical and pharmaceutical formulations. The patented design of NIR offers high analytical performance with better sensitivity and precise instrument matching to enhance method development, minimize implementation time and promise seamless method transferability.

NIR analyzers can also be used in the manufacturing processes form raw material inspection to even till the testing of the final product release. It is a comparatively a new technology for refineries to monitor main products, intermediate streams and unit feed. NIR analyzer offered a low cost alternative when compared to traditional gas chromatographs or distillation analyzers.

Alston is an eminent analyst and writer which are writing about NIR analyzer. For more info visit at http://www.foss-nirsystems.com.

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