| Limit of detection |
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| • | signal - output
measured as difference |
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| between sample
and blank (averages) |
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| • | noise - std dev
of the fluctuations of the |
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| instrument output
with a blank |
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| • | S/N = 3 for limit
of detection |
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| • | S/N = 10 for
limit of quantitation |
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