iSi was founded in Austria in 1867. The company specializes in products used for making carbonated drinks at home and in professional settings. Its range includes soda siphons, carbonation systems, and related accessories designed to produce sparkling water and other fizzy beverages. iSi also develops cream whippers and culinary tools used in food preparation. The brand is known for precision-engineered stainless steel equipment designed for repeated use and reliable performance.