Thanks to the patented formula and excellent manufacturing technology, Fragranite sinks are easy to care for and clean. The sinks do not retain traces of products and kitchen utensils. Fragranite Durakleen Plus is a patented material consisting of 80% quartz and 20% acrylic resin to bind solid particles. Franke sinks made of Fragranite are produced using hot forming technology, making them unparalleled for many reasons.