Introduction: Caltron Clays & Chemicals – The Most Trusted Oyster Shell Calcium Carbonate Manufacturer in India
Caltron Clays & Chemicals has established itself as the leading oyster shell calcium carbonate manufacturer in India, providing high-quality natural calcium derived from marine sources. Our proprietary product, OY-CAL, has become the go-to choice for pharmaceutical and nutraceutical companies seeking clean-label, compressible, and bioavailable calcium for tablets, capsules, suspensions, and beyond.
In a pharmaceutical landscape increasingly driven by clean sourcing, formulation stability, and global regulatory expectations, Caltron stands out as an oyster shell calcium carbonate supplier in India that delivers excellence at every stage from sourcing to supply.
Why Pharmaceutical Formulators Are Moving Toward Marine-Based Calcium
The shift from synthetic and rock-based calcium carbonate to marine-sourced calcium is rooted in science, safety, and sustainability:
1. Clean Label Compliance
OY-CAL supports brands seeking to eliminate synthetics and highlight natural ingredients. Its origin from oyster shells aligns with eco-conscious and green chemistry initiatives.
2. Superior Absorption & Bioavailability
Marine calcium mimics human bone matrix and is more easily absorbed compared to limestone-derived calcium. This translates into more efficient calcium uptake in the body.
3. Reduced Health Risks
Rock-based calcium is linked to calcification and kidney stone formation. OY-CAL’s natural source and lower impurity levels ensure safer long-term use.
4. Environmental Sustainability
Our sourcing model turns marine waste (discarded oyster shells) into a valuable pharmaceutical excipient, reducing the carbon footprint associated with mining.
5. Compliance with Global Trends
As global regulatory agencies emphasize excipient traceability and sustainability, marine calcium positions your brand for future compliance.
Caltron’s Unique Manufacturing Process – From Shell to Shelf
At Caltron Clays & Chemicals, we don’t just supply oyster shell calcium we refine it through a world-class production process that ensures pharmaceutical-grade results.
1. Selective Sourcing
We work with globally vetted excavation teams to source premium oyster shells (Oysto Teratta and Meta-Calciota species) from marine zones with optimal mineral balance and shell quality.
2. Deep Purification
A multi-step cleaning process removes organic residues, heavy metals, sand, and salts using:
- Chlorination
- Hot water washing
- Sedimentation
- Chemical neutralization
3. Sterilization & Calcination
Shells are heat-treated in a controlled environment to destroy microbial and organic contaminants without compromising mineral integrity.
4. Precision Grinding & Sieving
Using modern pulverizers and vibro sieves, we customize particle size (200 to 400 mesh), ensuring ideal flow, compressibility, and mouthfeel for pharma applications.
5. Batch-Wise Quality Testing
Every batch is tested for:
- CaCO3 content (usually > 98%)
- Magnesium content
- Heavy metals
- Moisture content
- Microbial load (TAMC/TYMC)
OY-CAL in Action: Enhancing Tablet Formulation Outcomes
Tablet manufacturing presents multiple challenges that OY-CAL effectively addresses:
Compressibility
OY-CAL delivers consistent hardness and prevents cracking, even at high-speed tablet compression.
Flowability
Fine particle size and uniform shape allow for excellent powder flow, essential in automated manufacturing.
Reduced Capping & Lamination
Thanks to its fibrous microstructure (especially in Oysto Teratta), OY-CAL prevents air entrapment and compression defects.
Stability
It doesn’t react with most APIs, preserving the stability of multi-ingredient tablets.
Taste & Texture
Ideal for chewables and suspensions due to its smooth, neutral mouthfeel.
Product Variants to Suit Every Need
Caltron offers two oyster shell calcium grades tailored for different formulation budgets and product profiles:
Oysto Teratta (Premium Grade)
- High CaCO3 Assay (> 98%)
- Magnesium ~1.5%
- Flaky texture and high fiber
- Best suited for pediatric, geriatric, and sensitive formulations
- Limited global availability; high demand
Meta-Calciota (Economy Grade)
- Slightly lower CaCO3 assay (~95-97%)
- Available in large quantities
- Cost-effective for mass-market nutraceutical and food applications
Key Applications of OY-CAL Across Industries
Caltron’s OY-CAL is not limited to tablets alone. Its versatility makes it ideal for various formulations:
In Pharmaceuticals:
- Tablets (chewable, effervescent, coated)
- Suspensions and syrups
- Capsules and soft gel filling
- Pediatric formulations
- Bone and joint supplements
In Nutraceuticals:
- Calcium & vitamin D3 blends
- Protein powders with mineral support
- Functional beverages
- Sachets & stick packs
In Cosmetics & Oral Care:
- Toothpastes (natural whitening)
- Face masks and scrubs (mild exfoliant)
In Food:
- Fortified dairy products
- Calcium-enriched cereals & grains
Regulatory Assurance for Pharma-Ready Supply
As a globally trusted oyster shell calcium carbonate manufacturer in India, Caltron delivers with complete documentation and assurance:
- GMP Certified Facility
- ISO 9001:2015 Accreditation
- IP/BP/USP compliance-ready products
- COA, MSDS, and TDS provided with each batch
- NABL-certified third-party test reports on request
All documentation is export-compliant and audit-ready, supporting pharmaceutical partners across regulated markets.
Global Reach: Caltron’s B2B Network Spanning Continents
Caltron proudly serves pharmaceutical and nutraceutical manufacturers in:
- India (all metro and tier-2 cities)
- USA & Canada
- UK, Germany, Italy, Spain, Netherlands
- South Korea, Vietnam, Japan
- UAE, Bangladesh, South Africa, Kenya
We support export logistics, labeling requirements, and region-specific compliance documentation.
Why Caltron Clays & Chemicals Is the Ideal Oyster Shell Calcium Carbonate Supplier in India
What makes Caltron stand out isn’t just the product it’s the complete package:
- Marine-based, eco-friendly sourcing
- Customizable particle sizes (200 to 400 mesh)
- High consistency and purity across batches
- Dedicated R&D and technical formulation support
- Bulk availability with consistent year-round supply
- White label and contract manufacturing support
- Local and global shipping with traceable logistics
We build long-term relationships, offering flexible MOQ options, custom packaging, and detailed technical support.
Our Commitment to Quality, Innovation, and Partnership
Caltron is not just a manufacturer and supplier we are partners in formulation success. Our internal team includes:
- Formulation scientists
- Regulatory experts
- Product engineers
- Logistics coordinators
This allows us to collaborate on everything from new product development to scaling production efficiently.
Technical Support & Documentation
Every Caltron shipment includes:
- Certificate of Analysis (COA)
- Material Safety Data Sheet (MSDS)
- Technical Data Sheet (TDS)
- Third-party testing reports (on request)
- Customs documentation for global shipments
We assist clients during product registration, licensing audits, and import/export clearance.
FAQs: Oyster Shell Calcium Carbonate by Caltron Clays
Q: What is the shelf life of OY-CAL?
A: Typically 3 years when stored in a cool, dry place in sealed packaging.
Q: Is this product suitable for pediatric use?
A: Yes. OY-CAL (especially Oysto Teratta grade) is highly bioavailable and ideal for children.
Q: Do you offer support for new product formulation?
A: Absolutely. Our team can help adjust mesh size, blend options, and evaluate excipient compatibility.
Q: What are the minimum order quantities (MOQ)?
A: We cater to both small-scale and large-scale clients with flexible MOQ policies.
Get Started with Caltron Clays & Chemicals Today
If you’re looking to enhance your formulation with a natural, stable, and high performing calcium carbonate, Caltron is ready to partner with you. Let us bring science, quality, and sustainability to your next product.
Visit: https://caltronclays.com/
Office: 210 & 211, Level 2, Orbit Premises, Mind Space, Chincholi, Malad (West), Mumbai — 400064, India
Email: marketing@caltronclays.com | sales@caltronclays.com | business@caltronclays.com
Tel: +91 70214 37453 / +91 22 2876 4864 / +91–22–4010 6828
Google Maps: https://maps.app.goo.gl/jCuz1ZCf1iAhzZiH7
Caltron Clays & Chemicals – India’s Premier Oyster Shell Calcium Carbonate Manufacturer for Trusted, Stable, and Science-Backed Formulations.
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