KFN - Lime and gravel from Switzerland! Kalkfabrik Netstal is a Swiss mining company and an internationally leading producer of food-grade, high-quality calcium hydroxide and calcium oxide. The unique first-class features of our raw material and the careful mining and processing using facilities that employ the most modern technologies ensure the highest quality of our products: - Highest purity, lowest iron and lead content in Europe - Calcium hydroxide content above 98% - Extra fine calcium hydroxide for faster chemical reactions - High CaO-reactivity with t60-value under 40 seconds - Highest white level without black spots, 96,8% (Spectro Color Ry) - Certified for food, animal feed and drinking water processes and products according to ISO 22000