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Table 4 RMSEP and percentage recoveries of the updated PLS model at different number of updating samples

From: Simultaneous determination of some antiprotozoal drugs in different combined dosage forms by mean centering of ratio spectra and multivariate calibration with model updating methods

No of updating

samples

DF

METB

 

RMSEP

%

improvement

RMSEP

%

improvement

1

0.923

 

1.018

 

2

0.393

57.42%

0.535

47.45%

3*

0.309

66.52%

0.356

65.03%

4

0.305

66.96%

0.377

62.97%

  1. * The optimum number of updating samples needed
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BMC Chemistry

ISSN: 2661-801X

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