Caltron Clays & Chemicals – Trusted Oyster Shell Calcium Carbonate Manufacturer and Supplier in India for Pharmaceutical Excellence
In the evolving pharmaceutical and nutraceutical space, raw material purity isn’t just a requirement it’s the backbone of product efficacy and consumer trust. Caltron Clays & Chemicals, a leading Oyster Shell Calcium Carbonate Supplier in India, transforms discarded marine shells into highly refined, pharma grade calcium carbonate that meets stringent global standards.
With OY-CAL, our signature oyster shell calcium carbonate powder, we’re not just delivering a product we’re providing assurance, compliance, and a commitment to better health through natural means. This blog explores how Caltron converts seafood waste into gold-standard calcium and why global pharmaceutical companies choose us as their trusted raw material partner.
1. Introduction – Why Caltron Is Synonymous with Purity
As a pioneering Oyster Shell Calcium Carbonate Supplier in India, Caltron Clays & Chemicals has spent the past two decades redefining how natural minerals are integrated into pharma and wellness products. Our product OY-CAL is the result of rigorous research, global raw material partnerships, and a strict internal quality code that ensures you receive calcium carbonate of unmatched purity and consistency.
2. What is Oyster Shell Calcium Carbonate?
Calcium carbonate derived from oyster shells is a naturally occurring mineral substance. Unlike rock-mined calcium, oyster shells offer a more absorbable and biocompatible form of calcium ideal for pharmaceuticals. They also contain trace minerals like magnesium and silica, which further enhance bioavailability.
OY-CAL by Caltron is extracted and processed under controlled environments, yielding a product that is clean-label, allergen-free, and suitable for a variety of dosage forms.
3. Natural vs Synthetic: Why Marine Calcium Wins
In today’s clean label pharmaceutical world, natural calcium sources are gaining massive preference over synthetic or rock derived alternatives. Here’s why pharma companies are making the shift:
Better Absorption – Marine calcium is more bioavailable.
Fewer Side Effects – Lower risk of complications like kidney stones.
Environmentally Responsible – Utilizes seafood industry by-products.
Rich in Essential Minerals – Includes naturally occurring trace elements.
At Caltron, we exclusively manufacture marine derived oyster shell calcium carbonate, ensuring our partners benefit from these advantages.
4. Our Raw Material Sourcing Strategy – Clean Shells, Cleaner Products
We procure oyster shells from select coastal regions through our vetted global network. Each shell lot undergoes:
- Visual and Structural Assessment
- Biological Contaminant Removal
- Chemical Purity Tests (Pre Processing)
Two premium oyster species form the base of our production:
Oysto Teratta – Known for flaky, fibrous texture and magnesium content (~1.5%). Premium quality.
Meta-Calciota – Economical and abundant, with slightly lower calcium content. Ideal for high-volume formulations.
We blend both based on client requirements, ensuring scalability and cost-efficiency.
5. Our Proprietary Purification and Processing Method
At Caltron Clays & Chemicals, the transformation from raw oyster shell to pharma grade calcium carbonate is a multi stage scientific journey:
- Washing & Decontamination – Removal of salts, debris, and organics using FDA-compliant cleaning agents.
- Drying – Low-temperature drying to preserve mineral structure.
- Grinding – Micronization to achieve uniform particle size as per pharma needs.
- Heat Sterilization – Microbial deactivation to meet regulatory microbial load limits.
- Purity Testing – COA, MSDS, and microbiology reports for each batch.
This meticulous process ensures our material is ready for global pharmaceutical compliance, including USFDA, GMP, and WHO standards.
6. Premium Shell Species: Oysto Teratta and Meta-Calciota
Understanding the source species is key to optimizing product formulation:
| Feature | Oysto Teratta | Meta-Calciota |
| Calcium Content | High (~98%) | Moderate (~94-95%) |
| Magnesium | ~1.5% | <1% |
| Texture | Flaky, fibrous | Grainy, solid |
| Availability | Rare | Easily available |
| Pricing | Premium | Budget-friendly |
Caltron offers customizable blends of both species for optimized cost-to-performance balance.
7. Applications in Pharmaceutical and Nutraceutical Formulations
OY-CAL is formulated to suit multiple pharmaceutical dosage forms, including:
- Chewable tablets
- Effervescent powders
- Suspensions
- Soft gel capsules
- Granules for sachets
Industries we serve:
Pharmaceutical – Leading formulation labs across India and international markets
Nutraceutical – Bone health, prenatal, geriatric calcium blends
Food Grade – Fortified beverages, cereals, and calcium supplements
Cosmetics – Premium cosmetic brands for oral and topical uses
8. Why Quality Assurance Teams Rely on Caltron’s Supply Chain
Caltron’s commitment to pharma integrity makes us the go-to Oyster Shell Calcium Carbonate Manufacturer in India for QA teams. Here’s how we align with their critical benchmarks:
Documentation – COAs, Batch Records, and GMP Certifications for every lot
Full Traceability – From raw shell origin to final product shipment
Regulatory Compliance – USFDA, WHO-GMP, FSSAI ready
Packaging Flexibility – HDPE drums, LDPE bags, customized industrial packaging
Consistent Testing – Heavy metal screening, microbiology, and calcium assay reports shared proactively
We ensure your audits go smoother, and your products are always compliant.
9. Sustainable Processing at Industrial Scale
By sourcing from seafood by products, Caltron supports a cleaner supply chain and reduces landfill waste. Our processes:
- Reduce marine waste pollution
- Are energy efficient with minimal water usage
- Comply with national environmental guidelines for industrial waste disposal
With over 1000+ tons monthly production capacity, we cater to global bulk orders without compromising our sustainable goals.
10. Your B2B Advantage with Caltron Clays & Chemicals
Partnering with Caltron means tapping into a world of pharmaceutical grade, natural calcium solutions trusted by top Indian and global brands.
Why choose us?
- Decades of experience in pharmaceutical minerals
- Custom particle size and blend solutions
- Dedicated B2B support and technical consulting
- Fast delivery timelines with strong supply chain systems
- Export ready documentation with regulatory support
Let’s make your calcium formulations safer, more effective, and globally compliant naturally.
Explore more Pharmaceutical Raw materials:
Algae Calcium Powder
Egg Membrane Powder
Experience the Caltron Advantage Today!
Elevate your product standards with Caltron’s OY-CAL the premium choice in Oyster Shell Calcium Carbonate Powder.
🌐 Visit: www.caltronclays.com
📍 Office: 210 & 211, Level 2, Orbit Premises, Mind Space, Chincholi, Malad (West), Mumbai – 400064, India
📧 Email: sales@caltronclays.com | business@caltronclays.com
📞 Tel: +91 22 2876 4864 / +91-22-3571 9844 / +91-22-4010 6828
🗺️ Google Maps: Locate Us
Caltron Clays & Chemicals – Setting the standard in natural calcium innovation for the pharmaceutical world. Order your bulk sample now!
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