SUMMARY Nanoparticles are particles that measure between 1-100 nanometers. In nanotechnology, a particle is defined as a small object that behaves as a unit towards its properties and transport. Synthesis of silver nanoparticles can be done by biosynthesis method using plants known as reductant, one of the plants that can be used is rubber leaf (Hevea brasiliensis). Biosynthesis has been adopt…