In this work, labile metals determination in water using ion exchange Chelex 100 resins and ion exchange membrane P81 as metal binding agents in diffusive gradients in thin films technique is presented. Working performance of the two material types was evaluated for metal standard solutions as well as for the Re river water in Haiphong. The results showed that P81 membrane could be used as a replacement for Chelex 100 resins in DGT technique for the determination of labile Cu, Ni, Pb and Fe.