Columbia River Carbonates

Calcium carbonate. Acts as a filler / extender. It is a dry, extra fine and double classified natural CaCO3. Microna™ 2 is recommended for use in rubbers. Complies with TSCA, DSL and CONEG. Also... view more

Calcium carbonate. Acts as a de-dusted filler / extender. Possesses brightness, uniformity, low binder level and suitable particle size distribution to accomplish excellent compactness as well as... view more

Microna™ 3 by Columbia River Carbonates is calcium carbonate. Acts as a filler / extender. It is a dry, fine and natural CaCO3. Microna™ 3 is used at high levels in putties, caulks and sealants because of its... view more

Calcium carbonate. Acts as a filler / extender. It is a white fine particle size additive with low binder level. Its lower cost minimizes the problems associated with oversize grit and offers... view more

Microna™ 10 by Columbia River Carbonates is calcium carbonate. Acts as a filler / extender. It is a white powder with no odor. Used for caulking applications. Complies with TSCA, DSL, and CONEG. Microna™ 10 is also... view more