square wa;·e voltammetric technique using glassy carbon electrode was developed for the determination of Vitamin C content in foster Clark's fruit powder of Orange and Mango. Voltammetrit: measurements were made in a potential mnge of -I 00 m V to 91)() m I( al a scan rule of 100 m Vis. Effect of pl! 011 the determination of Vitamin C was ' ' studied in the range a/ I- 6. The influence of the operational parameters like square waw frequency, square wave amplitude. and step potential was optimized. The obtained calibrauan grapt: shows a linear dependence of peak current rm the concentration of Vitamin C in the range of 8x10 ·5• j x 10· 'M. A detection limit (U)D) of 5. 404 x I 0·5 M and limit of quantification (LOQj of 5. 404 x 1 (I -4 ;\f were calculated The developed method wtis applied for the determination of Vitamin C in foster Clark's ' fruit powders. Recoveries ranging between .92.06-93.15% for orange foster Clark powder and 8 I .15-86.30% for Mango foster Clark: powder were achieved indicating th~ potential upplicabili1y of the developed method for the determination of vitamin C ' in real sampl