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100Mesh
SEPPE
2621900090
SEPPE cenospheres for polyester resin are lightweight hollow aluminosilicate microspheres with 100 Mesh Through particle size and approx. 0.80-0.85 g/cm³ true density. This grade is designed for polyester resin systems, artificial stone, casting fillers, and weight-reduction applications where stable mineral filling and low density are required.
▸ Cenospheres for polyester resin are lightweight resin filler microspheres used to reduce compound density while maintaining mineral stability and filling volume.
▸ The 100 Mesh Through grade disperses in polyester resin systems and helps reduce coarse particle defects in artificial stone, cast resin products, and resin filler applications.
▸ The approx. 0.80-0.85 g/cm³ true density range supports weight reduction in resin-rich systems without relying on organic lightweight fillers.
▸ Polyester Resin Filler: Designed for unsaturated polyester resin systems, casting resin, artificial stone, and resin filler formulations.
▸ 100 Mesh Through: Fine screened grade supports blending and reduces coarse particles in resin applications.
▸ Low Density Resin Filler: Approx. 0.80-0.85 g/cm³ true density helps lower finished product weight.
▸ Artificial Stone Application: Suitable for artificial stone and cast products where weight reduction and volume filling are required.
▸ Hollow Ceramic Stability: Aluminosilicate microspheres provide stable inorganic filling for resin systems after compatibility testing.

▸ Unsaturated polyester resin systems
▸ Artificial stone filler and cast resin products
▸ Lightweight resin filler and casting filler applications
▸ Decorative resin panels and molded resin products
▸ Weight reduction filler for resin-rich formulations
| 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 | 100 Mesh Through |
| True Density | Approx. 0.80-0.85 g/cm³ |
| Recommended Use | Polyester resin systems, artificial stone, casting filler, and weight-reduction applications |
| Bulk Density | Grade dependent |
| Customization | Surface treatment and particle size selection available on request |
▸ CENOSPHERE TDS — general technical data for polyester resin filler evaluation and customer documentation.
▸ Coating Grade Specification Sheet — particle size distribution, pH, iron content, and coating-grade controls.
▸ 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.
▸ Cenospheres reduce resin compound density while providing stable hollow ceramic filling and volume efficiency.
▸ Yes. The fine screened grade can be evaluated in artificial stone and cast resin products where smooth filling and lower weight are required.
▸ It can improve volume filling efficiency, but final resin demand depends on dosage, viscosity, and formulation design.
▸ Surface treatment can be discussed if stronger resin bonding or improved dispersion is required.
▸ Yes. Samples, TDS, and batch COA can be provided for resin formulation trials.
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