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Unread 06-19-2012, 01:38 PM
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Default eretic standard sample

eretic standard sample

I have recently set up the eretic sample concentration measurement experiment experiment on our AvanceIII instrument. It seems to work well but the accuracy of the technique depends on the standard sample used to calibrate, I used the Bruker 48.5 mM triphenylphosphate standard since it would be good for 1H, 13C and 31P and its concentration is known fairly precisely however I have been advised that these standards from bruker use thinner walled tubes than most of my users purchase and that therefore they have a different volume and this will lead to errors to concentration determination. Does anyone know of a standard good for the eretic technique.



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