Ultra-Sol® 200A

Advanced Particle Slurry

Ultra-Sol 200A is a unique colloidal alumina slurry with proven results in polishing a wide variety of materials.  Being an industry standard slurry for over fifteen years, 200A continues to be the process of record in many metals polishing processes, and has been proven to achieve excellent surface finish on epoxy resins and plastics. 
Ultra-Sol 200A has also become one of the most widely used slurries for polishing infrared materials as its unique particle technology provides scratch free surfaces on these challenging materials.
Ultra-Sol 200A is an acidic colloidal alumina dispersion, with advanced chemical-mechanical action, that provides superior surface finishes.  The proprietary alumina particles provide aggressive removal rates while maintaining superior surface finishes.  The acidic pH allows it’s chemical-mechanical action to provide superior, low scatter finishes in a wide variety of applications.

Ultra-Sol® 200A Details

Base Material:

Aluminum Oxide

Shelf Life:

12 Months


Product is typically available in 1 gallon jugs, 5 gallon pails, and 55 gallon drums. Alternative packaging sizes may be available upon request.


Aluminum, Cadmium Zinc Telluride, Gallium Arsenide, Indium Phosphide, Nickel, Spinel, Zinc Selenide

Similar Products

Ultra-Sol® 201A280Ultra-Sol® 201A60Ultra-Sol® 201A140
Base Material Aluminum OxideAluminum OxideAluminum Oxide
Particle Size (um)
Solids Content22.223.520.5
Specific Gravity1.191.181.15

Complementary Products

Category - Polishing Slurries

Handling Instructions

This material is a safe, aqueous based slurry. To avoid skin or eye irritation, however, handlers should use appropriate personal protective equipment including: rubber gloves, protective clothing, and eye protection. Follow all MSDS, Safety Data Sheet, and label precautions when handling this slurry. Also follow all appropriate industrial safety and hygiene practices when handling or using this product.

This slurry is designed as a ready to use product directly from the container. If the slurry is to be used in a diluted form, Eminess recommends using only high-quality deionized water (>18 M ohm) for the dilution. The product should be mixed periodically (10 to 20 minutes per day) by recirculation or mechanical stirring to ensure that the particles are uniformly suspended. To avoid possible scratching issues, storage and re-use of on-site diluted slurry is not recommended without proper mixing and filtration.

Due to the unique formulation of this slurry, it is recommended that the user not adjust the pH. If a different pH is required, please contact your Eminess Applications Engineer for assistance with your specific process need.


It is recommended that products be stored up to the expiration date at temperatures between 4°C and 33°C (40°F and 90°F). Products can be stored if kept above freezing (0°C or 32°F), and kept below 38°C (100°F) if prolonged exposure at temperatures at either extreme are avoided. Storage outside of the recommended conditions may result in irreversible product damage. In the event of exposure outside of the recommended conditions, please contact your Eminess representative for recommendations. In all cases the products should be allowed to return to room temperature prior to use.


Dispose of in accordance with all applicable national and local regulations.

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