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Search results with tag "Impu rities"
NMR Chemical Shifts of Trace Impurities: Common …
kgroup.du.edurelies heavily on using NMR spectroscopy1 is NMR Chemi-cal Shifts of Common Laboratory Solvents as Trace Impu-rities by Gottlieb, Kotlyar, and Nudelman.2 By compiling the chemical shifts of a large number of contaminants commonly encountered in synthetic chemistry, the publica-tion has become an essential reference, allowing for easy
Refractometer Calibration, Use and Maintenance
ucanr.edureverse osmosis to remove impu-rities. Test solutions are needed to calibrate your refractometer. Kits that include solutions with known ºBrix values can be purchased from refractometer manufactur-ers, but can be expensive. The following method can be used to make your own calibration test kit, saving yourself hundreds of dollars.