![]() ![]() In machine vision applications, wavelengths in the UV-A band, most notably at 365nm and 395nm wavelengths, are most commonly used. Below 300 nm, the UV-C band covers wavelengths from 100-280nm. Between 300-400nm, the band of the spectrum is known as the near-UV band and is divided into the UV-A (315-400nm) and UV-B (280-315) sub-bands. UV is electromagnetic radiation with a wavelength from 10-400nm, that is classed into three different bands. Now, however, with the advent of lower-cost UV LED illumination, these applications are becoming more affordable. In the past, such tasks were limited by the cost of UV light sources. While designers of such systems have applied these most effectively, there is an increasing demand to inspect products such as plastics, paints, printing inks and dyes that can benefit from illumination in the ultraviolet (UV) spectrum. Many machine vision systems use visible 390-700 nm LED lighting components with which to illuminate products. (Prof.For developers inspecting plastics, paints, and labels, ultraviolet (UV) illumination reveals defects that cannot be revealed with visible light. Introduction to IR Spectroscopy - Description of IR spectroscopy and table of absorption frequencies of common functional groups. SIS Online MS Tools - Series of online tools/utilities including Exact Mass Calculator, Mass Spectrum Simulator and a chart of elements/isotopes with exact mass and abundance percentage. (EPR facility, University of Texas Austin)ĮPR Sample Guide - Useful notes to prepare EPR samples (EPR Facility, Caltech) NOTE: At NYU Chemistry we have an X-band CW EPR system. What is EPR? - A consice description of the theory behind EPR spectroscopy. Reich from the University of Wisconsin has compiled a vast list of 1H, 13C, 19F, 31P and 77Se chemical shifts and couplings. Luc Patiny of École Polytechnique Fédérale de Lausanne created a website that allows NMR users to draw/input a chemical structure and predict its 1H, 13C, COSY, and HSQC/HMBC spectra.Ĭhemical Shift Database - Prof. The spectra include mass spectrometry, 1H NMR, 13C NMR, ESR, IR and Raman.Ĭhemical shift list of NMR solvents and trace impurities Database of spectra for 20 000 compounds. Integrated Spectral database System of Organic Compounds Want a complete refresher on how to use one of the instruments? Don't want to hear your own voice when reading the manuals above? We also have videos available for your reference.
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