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90Mesh
CENOLITE
2621900090
Cenospheres for Fillers & Coatings are lightweight hollow aluminosilicate microspheres with 90 Mesh Through particle size and true density around 0.90-0.95 g/cm³. This grade is designed for lightweight fillers, coatings, putties, and general direct sales applications where stable mineral filling and weight reduction are required.
▸ This grade is selected for customers who need a practical lightweight mineral filler for coatings, putties, fillers, and general industrial formulations.
▸ 90 Mesh Through particle size provides a balanced distribution for easy blending, volume filling, and surface material applications.
▸ The relatively higher true density range of approx. 0.90-0.95 g/cm³ provides stable filling performance while still reducing weight compared with dense mineral fillers.
▸ Balanced Filler Grade: Suitable for general filler use where cost, density, and processing stability must be balanced.
▸ 90 Mesh Through Particle Size: Practical for coatings, putties, fillers, and direct sales applications requiring stable handling.
▸ Lightweight Volume Filling: Hollow spherical structure helps reduce formula weight and improve volume efficiency.
▸ Good Blending Behavior: Spherical particles support dispersion and mixing in dry and wet systems.
▸ Multi-Use Application: Suitable for coating fillers, putty systems, lightweight compounds, and general mineral filler markets.

▸ Lightweight fillers for coatings and putties
▸ Wall putty, repair compounds, and surface finishing materials
▸ General industrial filler and volume extender applications
▸ Lightweight coating and texture systems
▸ Direct sales grade for distributors and formulation trials

| Chemical Analysis (Typical) | |
| SiO₂ | 50-60% |
| Al₂O₃ | 25-40% |
| Fe₂O₃ | 1-6% / low iron grade available |
| CaO | 1-1.5% |
| Physical Properties | |
| Shape | Hollow spherical powder |
| Color | Light grey to white |
| Particle Size | 90 Mesh Through |
| True Density | Approx. 0.90-0.95 g/cm³ |
| Recommended Use | Lightweight fillers, coatings, putties, and general applications |
| Bulk Density | Grade dependent |
| Customization | Particle size and density available on request |
▸ CENOSPHERE TDS — general technical data for product introduction, customs declaration, and customer evaluation.
▸ Coating Grade Specification Sheet — detailed particle size distribution, pH, and iron content for coating formulations.
▸ 600 kg jumbo bags — approximately 20 bags per 40' High Cube FCL, depending on grade and loading plan.
▸ Custom packaging, palletizing, and private labeling are available upon request.
▸ Store sealed in dry conditions. Reliable container shipment is available to major ports worldwide.
▸ It means the product is screened to pass 90 mesh, making it suitable for general filler, coating, and putty applications.
▸ It can be used in many coating and surface systems, but very smooth thin-film coatings may require a finer coating-grade selection.
▸ This density range offers stable filling and handling while still providing weight reduction compared with dense mineral powders.
▸ Yes. It is suitable for general direct sales, distributors, and customers evaluating cenosphere filler applications.
▸ Yes. Samples, TDS, and batch COA can be provided for testing.
Contact SEPPE for product specifications, samples, formulation trials, OEM packaging, and bulk pricing.
Request a QuoteSEPPE operates a fully integrated ISO 9001:2015 certified quality management system for coating grade cenospheres. Every batch undergoes rigorous testing to ensure particle size consistency, low iron content, excellent dispersion, and compliance with coating performance requirements.
▸Our quality control system ensures every batch meets exact coating application requirements, from raw material verification to final shipment.
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| Test Parameter | Test Method | Specification | Frequency |
|---|---|---|---|
| Particle Size Distribution | ISO 13320:2009 (Laser Diffraction) | D50=45-60μm, D98=105-140μm | Every Batch |
| pH Value | ISO 787-9 (10% Aqueous Suspension) | 7.0 ± 1.0 | Every Batch |
| Iron Content (Fe₂O₃) | X-Ray Fluorescence (XRF) | < 6% | Every Batch |
| True Density | ISO 787-10 (Pycnometer) | 0.70-0.90 g/cm³ | Every Batch |
| Moisture Content | ISO 787-2 (105°C, 2h) | ≤ 0.3% | Every Batch |
| Chemical Composition | X-Ray Fluorescence (XRF) | SiO₂ 55-65%, Al₂O₃ 27-33% | Every 3 Batches |
| Dispersion Test | High-Speed Mixing + Hegman Gauge | No agglomeration, uniform dispersion | Monthly |
▸Our lab is equipped with state-of-the-art instruments for coating-grade cenospheres:
• Laser Particle Size Analyzer – ensures narrow PSD for smooth coatings
• XRF Spectrometer – controls iron content and chemical consistency
• Hegman Gauge – evaluates pigment and filler dispersion quality
• High-Speed Disperser – simulates paint production conditions
• Moisture Analyzer – accurate moisture content determination


▸Every batch of CENOLITE 910 is verified for the following critical parameters:
• Particle size distribution – laser diffraction per ISO 13320 ensures D50=45-60μm, D98=105-140μm for optimal film smoothness and packing.
• Iron content (Fe₂O₃) – controlled below 6% via XRF to maintain low color interference and high brightness in light-toned paints.
• pH stability – 10% aqueous suspension tested per ISO 787-9, maintained at 7.0 ± 1.0 to ensure resin and additive compatibility.
• Density consistency – true density checked per ISO 787-10 (0.70-0.90 g/cm³) to guarantee predictable loading and lightweight performance.
• Dispersion performance – high-speed mixing and Hegman gauge test confirm no agglomeration, ensuring uniform incorporation in paint systems.
▸ D50 = 45-60 μm, D98 = 105-140 μm, optimized for thin-film and industrial coatings.
▸ Low iron (≤6%) ensures lighter color and better opacity, especially for white or light-colored paints and primers.
▸ Yes, every batch is tested with high-speed mixing and Hegman gauge to ensure no agglomeration and uniform dispersion in paint systems.
▸ Yes, each shipment includes a digital Certificate of Analysis with batch-specific test results.
▸ Yes, we offer custom cuts (e.g., D50=30-40μm for high-gloss finishes) upon request.
Contact our coating specialists to discuss custom PSD, iron content targets, or to request batch samples for your formulation.
Contact Coating Team