0.01M Biostone Ultra Filter0.01M Biostone Ultra Filter for Aquarius, Orion, Melody. Microlite and Neptune upiter 0.01M Biostone filter is the finest water filter available for domestic water purifiers (the same size as is used for kidney dialysis). This filter allows essential alkalizing minerals to pass through while cleaning and ionizing the water. Contains layers of Tourmaline and Coral Calcium within an anti-bacterial carbon block filter.