Reference Spectra
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Food Dyes and Beer’s Law - Thermo Fisher Scientific
assets.thermofisher.comUse the reference spectra in the Appendix to determine which chemical dye(s) are used to make each of the four colors from McCormick. Some of the colors are pure substances and some are mixtures of dyes. Enter your answers in Data Table 2 in the Lab Report. called the “wavelength of maximum absorbance”, which is abbreviated to λ max
CHM 335 Experiment #1 The Absorption Spectra of …
www.chm.uri.edu2. Insert the reference cuvette (methanol) into the rear cuvette holder. Do not insert the cuvette for the dye yet. 3. Click the “Baseline” button in the bottom left toolbar of the UV-Probe 2.51 software. 4. Allow the scan to finish (note that the wavelength …
RESEARCH PRODUCTS NMR Solvent Data Chart
www2.chem.umd.eduThe 1H spectra of the residual protons and 13C spectra were obtained on a Varian Gemini 200 spectrometer at 295°K. The NMR solvents used to acquirethese spectra contain a maximum of 0.05% and 1.0% TMS (v/v) respectively. Since deuterium has a spin of 1, triplets arising from coupling to deuterium have the
Assessment of Nucleic Acid Purity
medicine.yale.eduFIGURE 1. Spectra of reagents used in the isolation of nucleic acids. A) TriZol B) Phenol C) Guanidine HCL and D) Guanidinium isocyanate Contaminant Identification Examination of sample spectra may be useful in identifying that a problem with sample purity exists. It is recommended that the following be reviewed after each sample measurement: