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Table 4 Results in FUR found with %RSD and %RE for showing intra- and inter-day accuracy and precisions

From: Application of ion pair complexes to design novel potentiometric membrane sensors for direct determination of frusemide in pharmaceuticals

Sensor FUR taken, mmol/L Intra-day variations Inter-day variations
FUR found*, mmol/L %RSD %RE FUR found$, mmol/L %RSD %RE
FUR-BPB 0.90
1.50
2.10
0.88
1.43
2.13
2.62
2.12
2.11
2.22
4.67
1.41
0.93
1.54
2.15
3.11
2.89
2.22
3.33
2.67
2.38
FUR-BCG 0.90
1.50
2.10
0.91
1.53
2.11
1.87
2.32
2.44
1.11
2.00
0.48
0.92
1.51
2.14
1.13
1.89
2.32
2.22
0.67
1.90
  1. *Arithmetic mean of 7 measurements
  2. $Arithmetic mean of 5 measurements