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                       TLC and HPTLC

52 quantitation error

quantitation error

Figure 52 : ONLY if the calibration value below and above the
measured substance signal differs only by a very few relative percent the non linear calibration line can be treated as LINEAR - these are the few percent of quantitative analyses where a linear interpolation is possible. Reason: the non linear interpolation shows versus the linear interpolation errors which are smaller than the uncertainty of the calibration line in this range of data.

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