Ensure your family drinks clean and pure water with the Philips Filter WP3911. This filter features a four-stage filtration system that removes bacteria, harmful organic compounds, and chlorine while retaining essential minerals. With key materials like hollow fiber membranes and granular activated carbon (GAC), it achieves 99.99% bacteria removal, over 75% chlorine reduction, and clarifies up to 3000 liters or about 1 year. It also eliminates VOCs. Designed for Philips water purifiers WP3811/3812 and faucet filter WP3822, this filter has a lifespan of 2400 liters or around 8 months, made in Japan. Keep your water filtration system efficient for healthy hydration at home.