BRITA MicroDisc Water Filter for Fresh-Tasting Water. The BRITA MicroDisc filters out impurities such as certain pesticides, herbicides, and hormones. One BRITA MicroDisc water filter lasts for four weeks. Thanks to the optimally regulated water flow, drinking water from filtered drinking glasses and carafes is easy. BPA-free (according to TÜV) – made from pressed natural coconut shells. Compatible with BRITA Drinking are the "Active" and "Vital" glasses as well as BRITA water-filtering carafes. Innovative water filter with BRITA "MicroDisc" filtration technology: Millions of pores remove taste-altering substances like chlorine from the water while retaining minerals such as magnesium and calcium; the filter is made from naturally pressed coconut shells. Application: Simply hold under running water and insert – done. Can be used with BRITA water-filtering drinkers and carafes. For more information, please refer to the user manual.