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Anonymous users2024-02-10Near-infrared spectroscopy (NIR) is one of the fastest-growing and more compelling analytical techniques since the 90s. With the in-depth application and development of NIR analysis methods, it has gradually been widely accepted by the public and officially recognized. In 1978, the United States and the University adopted the near-infrared method as the standard method for the analysis of wheat protein, and in 198, the American Society for Testing and Materials formulated the ASTM D6342 standard method for the determination of hydroxyl number content in polyols (polyurethane raw materials) by near-infrared spectroscopy.
In 203, the national standard GB T for the determination of moisture, crude protein, crude fiber, crude fat and lysine in feed by near-infrared spectroscopy was also officially implemented in China 1868202 due to the good transmission characteristics of near-infrared light in conventional optical fibers, and its instrument is simple, fast analysis, non-destructive and small sample preparation 、...
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Anonymous users2024-02-09Truscan handheld Raman spectrometer.
Truscan handheld Raman spectrometer.
Thermo Fisher Scientific is designed for on-site analysis and its simple operation allows even operators with no chemical expertise to obtain reliable, repeatable, and accurate results.
Thermo Handheld Raman Spectrometer Truscan GPTure Thermo Scientific Handheld Raman SpectrometerTruscan GP Thermo Fisher, The overall performance enhancement provides users with faster results while enabling faster library development and data synchronization.
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Anonymous users2024-02-08Recommended 7G F660 and F670 handheld Raman spectrometer, which is about the same size as a mobile phone, is used in customs, laboratory workshops, docks, and food hygiene, and pharmaceutical enterprises are very used, which is not high, and belongs to the middle and high-end.
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Anonymous users2024-02-07Raman spectroscopyImported brands: thermofisher, Thermo Fisher, PerkinelmerPerkinElmer, Spotlight Technology FPI
Renishaw, Renishaw, et al. Raman spectrometer is mainly used in scientific research institutes, physical and chemical laboratories of colleges and universities, biological and medical fields and other optical aspects to study the determination and confirmation of material composition;
It can also be used in the forensic investigation and jewelry industry for drug detection and gemstone identification.
The instrument is known for its simple structure, easy operation, fast, efficient and accurate measurement, and low wavenumber.
Renowned for its measurement capabilities;
The confocal optical path is designed for higher resolution, which can be used for um-level micro-detection of the sample surface, and can also be used for microscopic image measurements.
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Anonymous users2024-02-06Advantages and disadvantages of Raman spectrocopy.
Advantages of Raman spectroscopy: It provides fast, simple, reproducible, and more importantly, non-destructive qualitative and quantitative analysis, and the high-profile Raman spectrometer does not require sample preparation, and the sample can be measured directly through a fiber optic probe or through glass, quartz, and fiber optics; The Raman scattering of water is weak, and Raman spectroscopy is an ideal tool for studying biological samples and chemical compounds in aqueous solutions; Raman can cover a range of 50-4000 wavenumbers at a time and can analyze both organic and inorganic matter, while in order for the IR spectrum to cover the same range, the grating, beam splitter, filter and detector must be changed.
In chemical structure analysis, the strength of the independent Raman interval can be related to the number of functional groups. Because the diameter of the laser beam is usually only millimeters at its focal point, conventional Raman spectroscopy requires only a small amount of sample to be obtained.
This is a great advantage of Raman spectroscopy over conventional infrared spectroscopy. In addition, the Raman microscope objective lens of the Golitong Raman spectrometer can further focus the laser beam to 20 microns or even smaller, allowing the analysis of smaller areas of samples; The resonant Raman effect can be used to selectively enhance the vibrations of large biomolecule-specific chromophores, whose Raman intensity can be selectively enhanced by a factor of 1,000 to 10,000.
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On-site printing has high requirements for the hardware of the label printer, and the printer is easy to fall when working in the field, so the workmanship must be hard. And I don't know what kind of ambient temperature you want to use, sometimes the temperature is too low to print will not be clear, and the temperature is too high to print easy to burn the carbon band. There are certain requirements for the labels in the communication room, and relevant specifications have been formulated to standardize the labels and can be applied to on-site printing.
The penetration of precision excitation is better, and the stainless steel alloy is usually made by hand! Hand-held detection of aluminum is basically not possible, and it is necessary to rely on a desktop computer. With more problems can be a small window for me, spectrometer manufacturers.