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Table 2 Chemical ingredients of new and 5 years of field used net detected by HPLC technique

From: Durability associated efficacy of long-lasting insecticidal nets after five years of household use

Net Condition Number of washing Deltermethrin content (mg/m2) R-isomer Bioefficacy Tests
     KD 60 FM 24 Hrs
New Net 0 66.5 3.6 84 100
Old net A/01/F0 130 n.d < 0.5 14 20
Old net A/02/F0 130 n.d < 0.5 10 8
Old net A/04/F0 130 n.d < 0.5 0 10
Old net A/05/F0 128 n.d < 0.5 0 10
Old net A/07/F0 130 n.d < 0.5 0 10
Old net A/09/F0 126 n.d < 0.5 0 10
Old net A/10/F0 130 n.d < 0.5 0 10
  1. n.d = No Deltermethrin detected, FM = mortality in 24 hours after contact bioassay.