Nuclear Magnetic Resonance (NMR 400 MHz)
Make & Model – JEOL & JNMECS400
ECS Narrow Bore Spectrometer (400) FT NMR System is a versatile high-performance system that utilizes the latest digital and high-frequency technologies. The JNM ECS400 series FT NMR System features improved operability and small installation space, both of which are required for routine NMR systems. It’s a two-channel spectrometer., Room-temperature shim: Digital matrix shim, 21 items controlled.
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Variable temperature range: -140 to +180-degree C.
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High Band (1H /19F) amplifier (HF): 50 W,
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Low band (or Broad) band amplifier (LF): 150W
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Gradient Strength: 30G/Cm @ 10A (Standard)

Working Principle:
The principle behind NMR is that many nuclei have spin and all nuclei are electrically charged. If an external magnetic field is applied, an energy transfer is possible between the base energy to a higher energy level (generally a single energy gap). The energy transfer takes place at a wavelength that corresponds to radio frequencies and when the spin returns to its base level, energy is emitted at the same frequency. The signal that matches this transfer is measured in many ways and processed in order to yield an NMR spectrum for the nucleus concerned.
Fig., relates to spin- ½ nuclei that include the most commonly used NMR nucleus, proton (1H or hydrogen-1) as well as many other nuclei such as 13C, 15N and 31P. Many nuclei such as deuterium (2H or hydrogen-2) have a higher spin and are therefore quadrupolar and although they yield NMR spectra their energy diagram and some their properties are different.

Usage:
1Organic/Inorganic Chemistry/Pharmaceuticals: Analyrsis of molecular structure and identification of unknown chemical substances.
2 Polymer Chemistry/Food Chemistry/Qualitycontrol: Quantitative analysis and analysis of mixtures
3 Peptides/Petrochemicals/Organometallics/Catalysis Electro chemistry: Measurement of diffusion coefficient, relaxation time, dynamics, reaction monitoring.