A line of high purity calcined alumina optics polishing abrasives that come in two grades for grinding, lapping, and finishing a wide variety of sub-strates is available from Meller Optics, Inc. of Providence, Rhode Island.Meller Microlux Alumina Abrasives are offered in two grades and are ideal for grinding, lapping, and polishing a variety of optical substrates such as barium- or calcium fluoride, germanium, silicon, zinc selenide, zinc sulfide, and stainless steel.  Supplied as powder in seven particle sizes from 0.05 to 3.0 µm, they can produce 10-5 scratch-dig surface finishes.Designed for mixing with de-ionized water, Meller Microlux Alumina Abrasives include Microlux-R for aggressive grinding and lapping, which is 99.98% pure, and has large agglomerated particles that break down under pressure for final polishing, and Microlux-RZ which is 99.99% pure and has controlled particle sizes (deagglomerated) for fine grinding and uniform polishing.Meller Microlux Alumina Abrasives are priced from $27.00 to $52.00 per lb., depending upon grade, particle size, and quantity. Free samples and pricing are available upon request.
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