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Table 9 Intra- and inter-day precision (n = 6)

From: Experimental design approach, screening and optimization of system variables, analytical method development of flurbiprofen in nanoparticles and stability-indicating methods for high-pressure liquid chromatography

Samples Inj. No Intraday precision of FBP Interday precision of FBP   
   Peak area I Peak area II Day 1 Peak area I Day 2 Peak area II
1 1 1459.58 1459.74 1492.47 1498.87
2 2 1458.35 1457.63 1487.74 1512.14
3 3 1458.39 1458.39 1496.31 1502.36
4 4 1454.56 1455.23 1482.23 1507.14
5 5 1457.56 1456.49 1489.65 1513.21
6 6 1457.90 1456.62 1491.21 1514.42
  Mean 1457.72 1455.06 1489.93 1516.59
  % Amount found 100.25 100.30 102.50 104.40
  SD 0.87 1.49 5.15 9.39
  %RSD 0.06 0.10 0.35 0.62
   Mean of 2 1456.39 Mean of 2 1503.26
   SD 1.18 SD  
   %RSD 0.081 %RSD