ResinTech SBG1P-OH-ID is a dyed hydroxide form type 1 gel strong base anion resin. SBG1P-OH-ID is dyed with a permanent blue dye that changes from deep blue to amber as the resin exhausts. SBG1P-OH-ID is intended for use anywhere that a visual indication of resin exhaustion is desired. SBG1P-OH-ID is supplied in the hydroxide form.