What Requirements does the Low-field NMR Have for Samples? The NMR instruments require the samples have no magnetism metal materials. Low field NMR have no requirement at samples’ shape, liquid, powder, solid and semiliquid all can be tested. When operating, we should take attention to the followings in samples treating: 1. test tube ektexine must be clean, avoiding touch the tube bottom. 2. the sample must be in the effective measuring extent of tube bottom during the quota test. We also should ensure the tube has no influence to the test. 3. Wrapper of the samples can not generate NMR signals or affect the NMR signals. 4. Contrast samples or parallel samples should be test at the same temperature.
What Requirements does the Low-field NMR Have for Samples?
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