A HPLC method was developed for the determination of imidacloprid pencycuron 29% FS using C18 column, uv-detector and mobile phase of acetonitrile-water.The results showed that the variation coefficients and average recoveries of imidacloprid and 
pencycuron were 0.69%, 99.7% and 0.78%, 99.6% respectively.
pencycuron were 0.69%, 99.7% and 0.78%, 99.6% respectively. 
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