Bentonite
Rheology-modifying bentonite for suspension, viscosity control and thixotropic performance.
Learn MoreHigh-purity ASCOM ground calcium carbonates for paint, paper, plastics and masterbatch, ranging from coarse calcite chips to ultrafine coated grades.
Grades stocked
9
D50 range
0.75 – 2200 µm
Brightness up to
98.5 Ry / L*
Surface
Coated & uncoated
The table below will help you find the right calcium carbonate grade for your application. Compare particle size (D50 and % < 2 microns) to match the fineness you need, and brightness (Ry) to match the whiteness your formulation calls for. If you're not sure which grade fits, request the technical data sheet using the links below the table, or get in touch with a Serina team member for guidance on grade selection and availability.
| Grade | Type | Brightness (Ry) | % <2 microns | D50, microns | Applications | Stocked In |
|---|---|---|---|---|---|---|
| G3000 | calcite chips | white in colour | n.a. | 2200 | Plastics Construction | DBN & CPT |
| ASCOM 10 | powder | 95 | 20 | 7 | Paint & Coatings Plastics | DBN & CPT |
| ASCOM 5 | powder | 95.9 | 26.5 | 4 | Paint & Coatings Plastics Paper | DBN, JHB & CPT |
| ASCOM 2 | powder | 96.5 | 50 | 2 | Paint & Coatings Plastics | DBN, JHB & CPT |
| IOKAL ULTRAFINE | powder | 98.5 (L*) | 90 | 0.75 | Paper | DBN & CPT |
| ASCOM 30T | coated | 96.1 | 30 | 4 | Masterbatch & PVC | DBN & CPT |
| ASCOM 50T | coated | 96.5 | 50 | 2 | Masterbatch & PVC | DBN |
| IOKALIT Extra Fine (1.1) | coated | 96 | 80 | 1.1 | Masterbatch & PVC | # |
| IOKALIT Extra Fine (0.75) | coated | 96 | 90 | 0.75 | Masterbatch & PVC | # |
No grades match this application.
# = Not in SA but can be ordered in FCLs (Full Container Loads)
Supports opacity and appearance, and in paint, it allows partial replacement of costlier TiO₂ without losing hiding power.
Lets formulators load higher volumes of filler without a corresponding rise in binder demand, useful for high-PVC paint systems and cost control generally.
An abundant and inexpensive relative to functional pigments, so it reduces raw material cost while maintaining performance when used correctly.
Supports smoothness and gloss control in paint, printability and brightness in paper coating, and consistent dispersion in plastics/masterbatch compounding.
Download our industry guide to mineral fillers and extenders: a practical reference for matching product grade to application.
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