Manufacturing of Photovoltaic modules includes rinse steps. The rinse water quality has to be Ultrapure Water meeting ASTM D5127 Type E3 standard as minium. Ultrapure Water System removes ionic impurities upto ppb level and in addition parameters like Particles, TOC also should be at very low level. U PW system includes several process steps to achieve such specifications. The plant equipments are manufactured out of materials like PP.