Perlite microsphere fillers are used to reduce weight (lightweight) of rotationally molded or cast polyester, polyurethane, and epoxy resin products.

We provide the most cost-effective materials to reduce weight from: cultured marble, picture frames, bowling ball cores, putties and architectural and decorative pieces.

Perlite filteraids are environmentally safe replacements for diatomaceous earth filter media. Our filtration products can be used to filter everything from simple aqueous systems such as swimming pools or beer to complex pharmaceuticals, frying oils and organic wastes.

For specialty formulations or other assistance please contact us .

For ceramic microspheres (cenospheres), please visit Cenostar at:


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Lightweight Fillers | Lightweight Filter Aids | Specialty Filter Aids | Specialty Fillers | Contact Us

American Stone Pioneers
P.O. Box 4083
Rolling Hills Estates, CA 90274
Phone: 310-377-7977  Fax: 310-377-1287