Complete reference guide for converting mesh sizes to particle sizes in microns for calcite powder, dolomite powder, and ground calcium carbonate (GCC).
How to Use This Chart
Mesh size refers to the number of openings per linear inch in a sieve. Higher mesh numbers indicate smaller particles. Use this chart to select the right particle size for your application.
Complete Mesh Size Conversion Table
| Mesh Size | Theoretical (µm) | Theoretical (mm) | Practical (µm) | Practical (mm) | Typical Applications | Available in |
|---|---|---|---|---|---|---|
| 100 | 254 | 0.254 | 149 | 0.149 | Coarse construction materials, bulk fillers | Dolomite, GCC |
| 120 | 211.7 | 0.212 | 125 | 0.125 | Construction materials, coarse industrial applications | Dolomite, GCC |
| 140 | 181.4 | 0.181 | 105 | 0.105 | Construction materials, coarse industrial applications | Dolomite, GCC |
| 170 | 149.4 | 0.149 | 88 | 0.088 | General industrial applications | All Products |
| 200 | 127.0 | 0.127 | 74 | 0.074 | Construction materials, coarse fillers | All Products |
| 230 | 110.4 | 0.110 | 63 | 0.063 | General industrial applications | All Products |
| 270 | 94.1 | 0.094 | 53 | 0.053 | Standard industrial applications, paints | All Products |
| 325 | 78.2 | 0.078 | 44 | 0.044 | Fine industrial applications | All Products |
| 400 | 63.5 | 0.064 | 38 | 0.038 | Standard paints, plastics, rubber | All Products |
| 500 | 50.8 | 0.051 | 25 | 0.025 | Premium paints, fine plastics | All Products |
| 635 | 40.0 | 0.040 | 20 | 0.020 | High-quality coatings, fine applications | All Products |
| 800 | 31.8 | 0.032 | ~15 | 0.015 | Premium coatings, fine papers | All Products |
| 1000 | 25.4 | 0.025 | ~10 | 0.010 | Ultra-fine applications, specialty uses | All Products |
| 1200 | 21.2 | 0.021 | ~8 | 0.008 | Specialty applications, premium papers | Calcite, GCC |
| 1500 | 16.9 | 0.017 | ~5 | 0.005 | Ultra-fine specialty applications | Calcite, GCC |
Application-Specific Recommendations
Paints & Coatings
- Interior Paints: 400-500 mesh (38-25 microns)
- Exterior Paints: 270-400 mesh (53-38 microns)
- Automotive Coatings: 635-800 mesh (20-15 microns)
- Industrial Coatings: 200-325 mesh (74-44 microns)
Plastics & Polymers
- Injection Molding: 400-500 mesh (38-25 microns)
- Extrusion: 270-400 mesh (53-38 microns)
- Film & Sheet: 635-800 mesh (20-15 microns)
- Reinforced Plastics: 200-325 mesh (74-44 microns)
Paper & Textiles
- Printing Paper: 800-1500 mesh (15-5 microns)
- Coated Paper: 635-800 mesh (20-15 microns)
- Textile Fillers: 400-500 mesh (38-25 microns)
- Specialty Papers: 1000-1500 mesh (10-5 microns)
Construction Materials
- Concrete: 100-270 mesh (149-53 microns)
- Mortar: 200-325 mesh (74-44 microns)
- Ceramics: 400-500 mesh (38-25 microns)
- Adhesives: 635-1000 mesh (20-10 microns)
Product-Specific Availability
Calcite Powder
Available in mesh sizes from 200 to 1500
Particle sizes: 5-74 microns (practical)
View ProductDolomite Powder
Available in mesh sizes from 100 to 1000
Particle sizes: 10-149 microns (practical)
View ProductGround Calcium Carbonate
Available in mesh sizes from 100 to 1500
Particle sizes: 5-149 microns (practical)
View ProductQuick Reference Guide
Common Conversions
- 1 inch = 25,400 microns
- 1 mm = 1,000 microns
- Mesh = 25,400 ÷ (mesh size × 0.001)
- Microns = 25,400 ÷ mesh size
Selection Tips
- Smaller particles = smoother finish
- Larger particles = better bulk properties
- Consider processing requirements
- Balance cost vs. performance
Frequently Asked Questions
Theoretical Formula: Microns = 25,400 ÷ Mesh Size
Example: 400 mesh = 25,400 ÷ 400 = 63.5 microns (theoretical)
Practical Size: 400 mesh = 38 microns (actual particle size)
Note: Practical values are more accurate for real-world applications.
Example: 400 mesh = 25,400 ÷ 400 = 63.5 microns (theoretical)
Practical Size: 400 mesh = 38 microns (actual particle size)
Note: Practical values are more accurate for real-world applications.
Mesh size: Number of openings per linear inch in a sieve
Particle size: Actual diameter of individual particles in microns
Relationship: Higher mesh = smaller particles
Particle size: Actual diameter of individual particles in microns
Relationship: Higher mesh = smaller particles
Consider: Application requirements, processing conditions, cost constraints, and final product specifications. Use our application recommendations above or contact our technical team for specific guidance.
Yes: We can provide custom mesh sizes and particle size distributions to meet your specific requirements. Contact our technical team to discuss your needs.
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