Fungicide individual stock solution standards (1mg/mL)were prepared in acetone and stored in dark vials at-18°C.A mixture standard stock solution (containing all compounds at 100/mL each)as well as was prepared in acetone. Calibration solutions were prepared in solvent (cyclohexane) and in grape,tomato and wine extracts from untreated samples at 0.025-10/mL concentration range. Matrix-matched standards solutions were prepared by evaporating to dryness portions of the final extract solution obtained from the uncontaminated matrices(tomato,grape and wine)under gentie nitroget stream and taking up the remained residue with the calibration solution.