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Item _chem_shift_ref.external_ref_loc

Description

External chemical shift references are defined as either located within 
the sample (e.g., as a capillary) or external to the sample and are inserted into 
the spectrometer before, after, or both before and after the sample containing 
the molecular system studied in the entry.

Category

Item Examples

Example 1:

internal

Mandatory Code

Data Type Code

Enumeration Values

 

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