vi SUMMARY Polyethylene terephthalate (PET) is a plastic polymer from the polyester group. PET is a polymer composed of terephthalate acid and ethylene glycol as monomers. The PET biodegradation test has been done using isolated thermophilic bacteria from Padang Ganting hot spring called Pseudomonas sp. genus. LBKURCC173, LBKURCC175 and Thermus sp. genus. LBKURCC174, LBKURCC176, LBKURCC177, L…