Converters & Calculators
Particle Size Conversion Table
Introduction to the Conversion of Particle Sizes
Conversion tables for particle size are an important tool in various industries for determining particle size. They provide a standardised method for converting between different units and measurement systems and ensure consistency and accuracy in particle analysis.
Mesh Size and Sieve Analysis
The term mesh size refers to the number of openings per inch in a sieve. A sieve is a device that contains a series of meshes used to separate particles according to size. In sieve analysis a sample is passed through these meshes to determine the distribution of particle sizes. Further analysis and services are available from Stanford Advanced Materials (SAM).
How Is the Particle Size Calculated?
When calculating particle size using a conversion table, the corresponding mesh number for the sieve is determined and the table is then consulted to identify the equivalent particle size in micrometres (µm). This method simplifies the determination of particle size without requiring complex calculations.
Table for the Conversion of Particle Sizes
This table provides common units used to describe particle size in various measurement systems:
|
Particle Size |
Micrometres (µm) |
Millimetres (mm) |
Nanometres (nm) |
Inch (in) |
Micrometres (µ) |
Mils (Thousandth of an inch) |
|
1 inch (in) |
25 400 |
25.4 |
25 400 000 |
1 |
25 400 000 |
1 000 |
|
1 Millimetre (mm) |
1 000 |
1 |
1 000 000 |
0.03937 |
1 000 000 |
39.37 |
|
1 Micrometre (µm) |
1 |
0.001 |
1 000 |
0.00003937 |
1 000 |
0.03937 |
|
1 Nanometre (nm) |
0.001 |
0.000001 |
1 |
0.00000003937 |
1 000 000 |
0.00003937 |
|
1 mil (Thousandth of an inch) |
0.0254 |
0.0000254 |
25.4 |
0.001 |
25 400 |
1 |
Notes:
- Micrometres (µm) and micron are frequently used interchangeably.
- The particle size often depends on the industry or application (e.g., powders, filters, aerosols); conversion between units assists in ensuring the correct usage.
- A mil is primarily used in the United States for measuring the thickness of coatings or films.
Frequently Asked Questions
What is the purpose of a particle size conversion table?
A particle size conversion table assists in converting mesh numbers to particle sizes and thereby facilitates accurate measurements for different applications.
How is the mesh number related to the particle size?
The mesh number indicates the number of openings per inch in a sieve; a higher mesh number corresponds to a smaller particle size.
In which industries is sieve analysis typically employed?
Industries such as the pharmaceutical sector, mining, food processing and construction commonly use sieve analysis to determine particle size.
Can particle size be calculated without a conversion table?
Yes; however, using a conversion table simplifies the process and reduces the likelihood of errors.
Which factors influence the accuracy of sieve analysis?
These factors include the condition of the sieve, the vibration method used, sample preparation and the ambient conditions during analysis.
Chin Trento
