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Posted by Admin on August, 26, 2026
The standard fine, low-iron grind for vitreous china sanitaryware and porcelain bodies — finer than tile-body-grade material, giving higher fired strength, better translucency and the whiteness sanitaryware buyers specify. Mine-direct from Rajasthan, India, with batch-tested purity on every shipment.
Why 300 Mesh Is the Sanitaryware & Porcelain Standard
Vitreous china sanitaryware demands more from its silica fraction than a standard ceramic tile body does — higher fired strength, better translucency, and a smoother, whiter finish under the glaze. 300 mesh gives the finer, more reactive particle size this needs, while low iron content keeps the fired body from picking up the faint discoloration that shows clearly on white sanitaryware surfaces in a way it wouldn't on a glazed, colored tile.
Aalok Overseas grinds 300 mesh Quartz Powder mine-direct from Rajasthan quartz, holding both mesh consistency and low iron content within tight tolerance so basins, WCs and cisterns fire out consistently white and dimensionally accurate, batch after batch.
Where 300 Mesh Fits Against Other Grades
Specification Sheet — 300 Mesh Grade
| PARAMETER | TYPICAL VALUE |
|---|---|
| SiO2 | 99.0% - 99.5% |
| Fe2O3 | 0.02% - 0.04% |
| Al2O3 | 0.2% - 0.4% |
| Whiteness (GE) | 88 - 92 |
| Mesh Size | 300 mesh (BSS/ASTM), 90%+ passing |
| Moisture | Below 0.1% |
| Loss on Ignition | Below 0.25% |
Where 300 Mesh Quartz Powder Is Used
Vitreous China Sanitaryware
Primary use case — basins, WCs, cisterns and other vitreous china fixtures where fired strength, whiteness and dimensional stability are all critical.
Porcelain Bodies
Shared specification with sanitaryware — fine, low-iron silica for porcelain tableware and technical porcelain requiring high translucency.
Premium Vitrified Tiles
Some high-end vitrified tile formulations step up from 200 to 300 mesh where a finer, more reactive body is specified.
Fine Glaze Blending
Occasionally used as a base for further fine glaze formulation where 300 mesh reactivity fits the glaze recipe.
Quality Documentation
Each shipment of 300 mesh Quartz Powder ships with a batch-specific, XRF-tested Certificate of Analysis covering SiO2, Fe2O3, Al2O3, whiteness and particle size distribution. First-time buyers can request a pre-shipment sample to trial the material in their own sanitaryware or porcelain body formulation before committing to a full container order.
Export & Packing
| DETAIL | STANDARD TERMS |
|---|---|
| Packaging | 25 kg / 50 kg PP or HDPE bags on pallets; 1-ton jumbo bags on request |
| Loading | 20ft & 40ft standard containers; bulk vessel loading for large orders |
| Export Ports | Mundra & Kandla, Gujarat, India |
| Core Export Markets | Vietnam, Indonesia, Malaysia, GCC, Sri Lanka, Bangladesh, Turkey |
| Trade Terms | FOB, CFR, CIF |
| Minimum Order | 1x 20ft FCL (trial quantities available) |
Frequently Asked Questions
Why is 300 mesh used for sanitaryware instead of 200 mesh?
Vitreous china needs a finer, more reactive silica fraction than tile bodies for higher fired strength, better translucency and a smoother glazing surface — 300 mesh delivers that while staying cost-effective to grind.
What SiO2 purity and iron content should I expect?
99.0% to 99.5% SiO2, with Fe2O3 kept lower than tile-body grades at 0.02% to 0.04%, since vitreous china needs higher whiteness and lower staining risk than standard glazed tiles.
Is 300 mesh suitable for porcelain as well as sanitaryware?
Yes — the same fine, low-iron grade used in vitreous china sanitaryware is also standard in porcelain body formulations with similar strength and translucency requirements.
What documentation comes with shipments?
An XRF-tested Certificate of Analysis reporting SiO2, Fe2O3, Al2O3, whiteness and particle size distribution on every batch.
What is the minimum order quantity?
Standard orders start at one 20ft FCL, with smaller trial quantities available for first-time buyers.
Request 300 Mesh Specification Sheet & Sample
Get the current CoA template, FOB/CIF pricing and a trial sample for your sanitaryware or porcelain body formulation.
Request Quote & Sampleindianfeldspar.com
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