ResinTech SBG1-OH-ULTRA is a high solids type 1 gel strong base anion resin in hydroxide form. The ULTRA grade has been functionally tested to produce > 18 megohm resistivity and under 2 ppb of TOC (when paired in a mixed bed with ULTRA grade cation resin). SBG1-OH-ULTRA is intended for use in industrial applications where a hydroxide form anion resin is required, for mixed beds, high operating temperatures, and low TDS polishing such as RO permeate.