An attempt was made to develop hexafluorotantalate(V)-selective coated graphiternelectrodes based on Malachite Green, Crystal Violet, and Ethyl Violet using fchloronaphthalene,rntri-n-bUI)'1 phosphate, and dimethylphthalate as plasticizers. Thernelectrode prepared by coating Malachite Green-hexaflllorotantalate(V) extract in fchloronaphthalenernVith a PVC matrix on a graphite rod Vas found to give a Nernstianrnresponse and hence was studied in detail. Potential measurements with the coated graphiternelectrode were made against a plastic sleeve HF-resistant Ag/AgCI external referencernelectrode. Optimum response of the electrode was observed in test solutions made 1 mollLrnin both sulphuric and hydrofluoric acids. The response characteristics of the electrodernwere evaluated. The linear range, slope, and detection limit were found to be f.O x f 0.5rn-rn1.0 X 10.2 mollL tantalum(V), 58.0 Â± 1.5 mV/decade, and 3.98 x 1rJ mollL tantalllm(V),rnrespectively. The precision of the method developed Vith the electrode Vas estimated to bern2% and the electrode functioned properly for three months. The effects of diverse ions onrnthe electrode response to hexafluorotantalate(V) were studied, and the potentiometricrnselectivity coefficients lVere evaluated. The electrode was found to be highly selective tornhexafluorotantalate(V). It was found that the response of the electrode tornhexafluorotantalate is free from inteiference of niobium which commonly occurs withrntantalum. The analytical application of the electrode to the detennination of tantailim inrnsynthetic matrices and real ore samples was also studied. The results obtained using fourrnpotentiometric techniques are in good agreement Vith the actllal or certified values.