GLC CalPro™ Series
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GLC Minerals manufactures its CalPro Series using naturally-mined calcium carbonate meeting the stringent requirements of industrial applications. The CalPro Series consists of top choice fillers for glass and extruded compounds, including plastics, adhesives, and sealants.
Manufactured for broad manufacturing applications as limestone consistent in chemistry and particle size distribution
Volume Enhancer
| GLC CalPro™ 1003 | GLC CalPro™ 1006 | GLC CalPro™ 1012 | GLC CalPro™ 1012d | GLC CalPro™ 1030 | GLC CalPro™ RMX | |
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| Product Availability |
Bulk: 303 50 # Bag: 324 Tote: 305 |
Bulk: 306 50 # Bag: 307 Tote: 308 |
50 # Bag: 309 Tote: 311 |
Bulk: 306G 50 # Bag: 319 Tote: 429 |
Bulk: 310 | Bulk: 717 |
| Application | Sealant, plastic and other compounded liquid manufacturing | Plastics and other compounded materials | Plastics and other compounded materials | Coatings, adhesives, polymers, and other compounds | Plastics and other compounded materials | Cement manufacturing |
| Micron Size | 3 | 6 | 12 | 12 | 30 | 12 |
| Technical Data Sheet |
Typical Chemical Analysis
| Chemical Compound | % of Product | |
|---|---|---|
| Calcium Oxide - CaO | 97.2 | |
| CaCO3 | 1.9 | |
| CaCO3 | 0.3 | |
| CaCO3 | 0.08 | |
| CaCO3 | 0.13 |
HOW DOES GLC MINERALS MANUFACTURE CALCIUM CARBONATE TO BE AN EFFECTIVE INDUSTRIAL EXTENDER?
GLC Minerals works directly with customers to assess specifications and match the particle size options to meet the needs of each application. Explore our industrial fillers manufactured by particle size for specific industrial applications.




Typical Particle Size Distribution
| U.S. Mesh Screen | % Retained | % Passed |
|---|---|---|
| 50 | 100 | 100 |
| 100 | 100 | 100 |
| 200 | 95 | 95 |
| 325 | 90 | 90 |
Adding Volume to CASE Products
Calcium carbonate, also called limestone, presents benefits in CASE (Coatings, Adhesives, Sealants and Elastomers), plastics and glass applications. As a functional extender, GLC CalPro provides structural integrity to improve durability and increase manufacturers efficiency.
Learn more about Calcium Fillers from GLC Minerals
Our industrial sales team works directly with project engineers to select the right calcium carbonate filler for each industrial application. Connect with our team below and we will reach out to you directly to answer any questions you have about our product offerings.





