Grade specification sheet
WT-CAL Water Treatment and Alkalinity Media
Coarse granular oolitic aragonite for process-water remineralization, alkalinity management and carbonate aggregate duty.
- 96.17% CaCO3, ASTM C 25
- 380NTU turbidity
- 6.8pH buffering point
- 2.93specific gravity
1Intended applications
- Process-water remineralization and pH correction
- Pond preparation and aquaculture alkalinity management
- Acid-water neutralisation beds
- Carbonate aggregate for sewer and acidic environments
- Recirculating system alkalinity buffering
Suitability for any particular process must be confirmed on a representative sample. Application rates and process performance are not specified by AragoCor.
2Particle size specification
| Grade | Sizing | Status | Classification range |
|---|---|---|---|
| WT-CAL | 1–3 mm | Published range | Screened from the natural commercial gradation |
| Custom | 20–325 mesh | Customer specification required | Application-specific classification |
The full screen size specification for the natural commercial grade is given in TDS-OA-001, section 5.
3Relevant chemistry
| Component | Value | Unit | Method | Status |
|---|---|---|---|---|
| Calcium carbonate, CaCO3 | 96.17 | % by wt | ASTM C 25 | Representative analysis |
| Calcium, elemental | 38.51 | % by wt | ASTM C 25 | Representative analysis |
| Magnesium carbonate, MgCO3 | 0.24 | % by wt | ASTM C 25 | Representative analysis |
| Sodium | 0.21 | % by wt | EPA 6010 | Representative analysis |
| Silica, SiO2 | < 0.01 | % by wt | ASTM C 25 | Representative analysis |
| Iron oxide, Fe2O3 | 0.01 | % by wt | ASTM C 25 | Representative analysis |
Analysis by Bowser-Morner, Inc. (AASHTO/ISO 17025), report 124914A. Sodium by Precision Enviro-Tech (California ELAP #2387). Full composition, including published deposit ranges, is given in TDS-OA-001.
4Physical characteristics
| Property | Value | Unit | Method | Status |
|---|---|---|---|---|
| Specific gravity | 2.93 | — | — | Representative analysis |
| Mohs hardness | 3.5–4 | Mohs | — | Published range |
| Surface area | > 1.7 | m2/g | Keck Lab | Representative analysis |
| Crystal system | Orthorhombic | — | XRD | Representative analysis |
| Zeta potential | −6.65 to −33.85 | mV | — | Published range |
| Moisture, as received | 5–10 | % | — | Published range |
5Why this grade
| Consideration | Basis |
|---|---|
| Grain geometry | Spherical ooids with average sphericity 0.82 and roundness 0.87, giving a predictable pressure drop in packed beds. |
| Buffering behaviour | Natural buffering point near pH 6.8, with solubility falling as that point is approached. |
| Dissolution in cementitious matrices | Calcium carbonate sand dissolves at a rate similar to the surrounding matrix, producing more even mass loss than the sudden drop-out of silica aggregates (ADS-OA-005). |
| Turbidity | Measured at 380 NTU per API RP 56. Wash-water handling should be specified accordingly for clarity-sensitive duties. |
AragoCor does not hold NSF/ANSI 61 or any potable-water contact certification. WT-CAL is not offered as a certified drinking-water contact media. Buyers whose application requires such certification should confirm the requirement before specifying this grade.
6Packaging options
| Format | Detail |
|---|---|
| Dry bulk | Vessel or bulk trailer |
| Super sack | Up to 3,000 lb |
| Bagged | From 1 lb |
| Distribution | Stockton, California |
7Information required for quotation
- Required particle sizing or target specification
- Estimated annual volume
- Delivery destination — city, ZIP or port
- Intended process or application
- Packaging format
- Any standard or specification to be met
8Quality documentation available
| Document | Content |
|---|---|
| Lot COA | Certificate of analysis issued for each dispatched lot |
| TDS-OA-001 | Master technical data sheet — full composition, properties and sizing |
| CERT-OA-001 | OMRI Listed® summary, product code avw-23214 |
| PDS-OA-001 | Manufacturing process — mechanical processing, no additives |
| SHS-OA-001 | Occupational safety summary |
| SDS | 16-section GHS Safety Data Sheet — consult before handling |
Send the grade, sizing, annual volume and destination and a sales engineer will respond with pricing and a freight estimate.
Values marked Representative analysis are measurements from an identified sample and describe material as tested. Values marked Published range are historical deposit ranges for dried, unwashed material. Neither constitutes a guaranteed minimum or maximum; a guaranteed specification is agreed in writing per contract and confirmed per lot by certificate of analysis. This information is offered for consideration, investigation and verification. It is not a warranty or representation of suitability for any particular application, nor permission to practise any patented invention.
Revision history
| Rev | Date | Change |
|---|---|---|
| A | Sep 2026 | First issue on approved values. |
AragoCor Minerals LLC · 2453 Grand Canal Blvd, Suite 200, Stockton, CA 95207