Material Resin, Activated Charcoal Product dimensions 4D x 4W x 4H millimeters Item weight 300 Grams NSF external testing certification About this item High quality filter material Filter element for coffee machine the filter shell does not contain Bisphenol A, the filter material uses high quality resin without food grade sodium ions and NSF certified natural coconut shell activated carbon, which can remove residual chlorine, organic matter and impurities such as peculiar smell can purify water quality and improve taste. Extend the life of the coffee machine The filter element of the coffee machine can remove the smallest dust particles. It can keep the water cycle clean and provide pure and delicious water for coffee making. Keep the pipe clean and prevent clogging of the coffee machine due to limescale buildup, thus preventing clogging of the coffee machine and extending the life of the coffee machine. the coffee machine can remove the smallest dust particles. It can keep the water cycle clean and provide pure and delicious water for coffee making. Keep the pipe clean and prevent clogging of the coffee machine due to limescale buildup, thus preventing clogging of the coffee machine and extending the life of the coffee machine. Replacement frequency A filter can filter up to 5000 cups of coffee. It is recommended to change the filter at least every 2 months or as required by the machine. Replace the coffee machine filter element once the water flow reaches 50 gallons to ensure the best water quality