If your processor's utilization is very low (requiring more than 8 weeks for a tank turnover), add this chemical to EKTACOLOR RA Developer Replenisher RT to provide additional protection from oxidation. Use this additive only with EKTACOLOR RA Developer Replenisher RT. Add this chemical only to the developer replenisher; do not add it directly to the developer tank solution. Follow the directions on the bottle closely, because this additive requires a different dilution for the developer replenisher. Use the replenishment rates given in Section 4, Using KODAK EKTACOLOR RA Chemicals in Professional Finishing Labs; replenisher treated with this additive requires a different replenishment rate.