Clensui Club demonstrated the SPA1001 Soda bath at the Japan Home and Building Show 2005 in Tokyo. Carbondioxide is commonly used to make Bath Salts which are very effective when a person is tired. Adding Bath Salts to water increases the Carbondioxide content to 20ppm (Part per million) but the Soda Bath increases it by twenty times to 1000ppm. To acheive this approximately one gram of Co2 is fused with one liter of water. The temperature of water is 37 - 40℃. After taking bath in the water the skin becomes smooth and retains moisture. It is very much similar to hot springs. However the SPA100 costs 9,40,000 Yen (US$ 8,000) the cost of filling a bath tub with 200 liters of Co2 water is 400 Yen ($ 4), which is much lower than a SPA treatment.