Tender For corrigendum : supply of pesticide residual lab : : - inductively coupled plasma mass spectrometry icp ms ms , gaschromatography with ecd and fpd detectors , utra high performance liquid chromatography uhplc system , uv vis spectrophotometer , gaschromatography with mass spectrometry gc ms ms , liquid chromatography tripple quadrupole mass spectrometer lc ms ms qqq