Tender For corrigendum : supply of vacuum oven with pump,vacuum oven with pump,vacuum oven with pump,potentiostat/galvanostat with necessary accessories,potentiostat/galvanostat with necessary accessories,potentiostat/galvanostat with necessary accessories,portable cyclic voltammetry/ charge and discharge system,portable cyclic voltammetry/ charge and discharge system,portable cyclic voltammetry/ charge and discharge system