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Table 4 Results of intra- and inter-day precision and accuracy

From: Development of membrane electrodes for selective determination of lisinopril in pharmaceuticals

ISELNP taken, mmol l−1Intra-day variationsInter-day variations
LNP found*, mmol l−1%RSD%RELNP found$, mmol l−1%RSD%RE
LNP-PTA0.0750.0733.812.670.0773.892.67
0.5000.5094.891.800.5114.112.20
1.0001.012.971.001.0204.332.00
LNP-PMA0.0750.0722.914.000.0732.992.67
0.5000.4944.191.200.5163.153.20
1.0001.0203.972.321.0303.633.00
  1. *Mean value of seven measurements; $Mean value of five measurements