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Table 2 Intra -day and Inter-day precision

From: Validated high-performance thin-layer chromatographic analysis of curcumin in the methanolic fraction of Curcuma longa L. rhizomes

Standard marker

Concentration

(ng)

Intra-day

Inter-day

% RSD

Mean RSD

%RSD

Mean RSD

Curcumin

200

0.29

 

1.85

 

400

0.19

0.31

1.09

1.48

600

0.45

 

1.5