Today we follow Li Hong and her colleague Shu Hui
She introduced to us some very important Machinary which they use.
This is a HPLC (High-Performance Liquid Chromatography). This machine is very delicate in the sense that it coloumns and tubing are very fiine. Before she could put the solution that she wanted to test, she first had to purify by passing it through a syringe filter. This removes particles of certain micron. If not, it may clog up the machine which can be very costly to replace.
This is a electronic pH metre. It is very sensitive and can measure up to 2 decimal places
Li Hong then introduced us to the NMR (Nuclear Magnetic Resonance)
Quote from Wikipedia:
''Most frequently, NMR spectroscopy is used by chemists and biochemists to investigate the properties of organic molecules, though it is applicable to any kind of sample that contains nuclei possessing spin. Suitable samples range from small compounds analyzed with 1-dimensional proton or carbon-13 NMR spectroscopy to large proteins or nucleic acids using 3 or 4-dimensional techniques. The impact of NMR spectroscopy on the sciences has been substantial because of the range of information and the diversity of samples, including solutions and solids.''
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