Small particle colloidal silica slurry:
ULTRA-SOL® 200S is a high-purity colloidal silica slurry in a specially formulated alkaline dispersion. This unique slurry also contains Pureon’s proprietary non-drying technology that is proven to reduce problems associated with colloidal silica drying, caking, or crystallizing on exposed surfaces. The small particle size of the 200S is designed for the critical polishing of precision opto-electronic materials such as silicon, gallium arsenide, indium phosphide, germanium, and other IR materials. The combination of the small colloidal silica particles with the proprietary chemistry technology produces exceptionally low surface finishes in both pad and pitch processes. ULTRA-SOL® 200S performs well in slurry recirculation systems due to the robustness of the particle, and its unique chemistry makes it easy to suspend and handle.