Analyte RMTEM±RSD% Median RMTIM(±RSD%) Median tIM(±RSD%)
Povidon 1.0001(±0.10%) 1.0001 1.0006(±0.22%) 0.10001 14.95(±0.61%)
tEM(Povidon)(±RSD%) 14.94(±0.32%)      -          -         -         -
  Melamin   1.0000(±0.10%)   1.0000   0.9999(±0.25%)   0.9993            -
tEM(Melamin)(±RSD%) 14.97(±0.82%)       -        -         -          -
  Caprolactam   1.0002(±0.3%)   1.0001   1.0020(±0.15%)   1.0020            -
tEM(Caprolactam)(±RSD%) 14.86(±0.98%)  
Corrected tPE (tPE -0.5 tRamp) 14.92 min
Table 2: SDS-DIMEKC identification of povidone, melamine and Ɛ-caprolactam.Paracetamol was used as internal marker (IM). The relative migration times werecalculated by using either internal marker (RMTIM) or external markers (RMTEM).The separation conditions as those given in Figure 1, (n=80).