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Table 2 Intra- and inter-day analysis ( n = 6)

From: Validated TLC-densitometry method for the simultaneous analysis of pyrethroid insecticides in agricultural and domestic products

Standard Intra-day precision Inter-day precision
Amount fractioned (ng) % recoverya) % RSD Amount fractioned (ng) % recoverya) % RSD
1sttime 2ndtime Day1 Day2
Cis-permethrin 300 105.7 105.3 0.28 300 105 104 0.766
600 97 96.74 0.2 600 97 97 0.0
1200 99.73 99.57 0.1 1200 99.7 99.6 0.1
Trans-permethrin 300 103.5 103.4 0.097 300 103 102 0.78
600 98.33 97.44 0.61 600 98.3 98.2 0.1
1200 100.2 100.4 0.199 1200 100 100 0.0
Esbiothrin 300 102.5 102.1 0.29 300 102 102 0.0
600 96.88 96.6 0.2 600 96.8 95.3 1.15
1200 99.85 99.17 0.5 1200 99.8 99.4 0.3
Alpha-cypermethrin 300 97.87 99.81 1.42 300 97.9 97.7 0.1
600 100.5 100 0.299 600 100 101 0.697
1200 99.9 99.9 0.0 1200 99.9 99.4 0.3
  1. a)Values are mean of n = 6.