A line of high-purity calcined alumina optics polishing abrasives that come in two grades for aggressive grinding and lapping and fine grinding and uniform polishing is available from Meller Optics, Inc. of Providence, RI.

Meller Microlux Alumina Abrasive Powders come in two grades: Microlux-R featuring large agglomerated particles that break down under pressure for aggressive grinding and lapping, and Microlux-RZ which is de-agglomerated with controlled particle sizes for fine grinding and uniform polishing. Supplied in seven particle sizes from 0.05 to 3.0 µm, these high-purity powders are capable of producing surface finishes to 10-5 scratch dig.

Suitable for grinding, lapping, and polishing a wide range of hard and soft optical substrates, Meller Microlux-R is 99.98% pure and Microlux-RZ is 99.99% pure and both are completely water soluble and non-toxic.  Applica-tions include barium- or calcium fluoride, germanium, silicon, stainless steel, zinc selenide, zinc sulfide, and semi-soft crystalline materials.

Meller Microlux Alumina Abrasive Powders 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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