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Table 1 Scoring criteria based on manufacturer’s recommendations

From: Use of insecticide quantification kits to investigate the quality of spraying and decay rate of bendiocarb on different wall surfaces in Kagera region, Tanzania

Optical density Concentration range Recommendation
>0.39 Below 20 mg/m2 No residual insecticide
0.3-0.39 20-100 mg/m2 Insecticide dose below WHO recommendation
<0.3 100-400 mg/m2 Insecticide dose meets WHO recommendation