In the pharmaceutical industry, sieves are essential tools for particle analysis and quality control.
These sieves help ensure that the final product meets the required specifications by separating particles of different sizes.
The types of sieves commonly used in the pharmaceutical industry include:
1. Woven Wire Sieves
Woven wire sieves are made of woven wire mesh.
They are used for general particle size analysis.
These sieves come in different mesh sizes, allowing them to separate particles ranging from coarse to fine.
2. Bolting Cloth Sieves
Bolting cloth sieves are made of fine mesh.
They are used for the analysis of very fine particles.
These sieves are commonly used in the pharmaceutical industry for quality control of powders and granules.
3. Bar Screens
Bar screens consist of parallel bars or rods spaced at regular intervals.
They are used for the removal of large particles or debris from liquids or powders.
4. Punched Plates (Perforated Screens)
Punched plates have holes or perforations of different sizes punched into a metal plate.
They are used for the analysis of larger particles.
These sieves are commonly used in the pharmaceutical industry for particle size distribution analysis.
Methods of Sieving in the Pharmaceutical Industry
In addition to these types of sieves, there are also different methods of sieving used in the pharmaceutical industry.
The two main methods are dry sieving and wet sieving.
Dry Sieving
Dry sieving is used when the particles are free-flowing.
It involves passing the particles through the sieve openings with just a shaking or tapping motion.
This method is commonly used for the analysis of powders and granules.
Wet Sieving
Wet sieving involves adding water to the sample to get the particles to pass through the sieve.
This method is often used in the aggregate industry, where clay and silt can stick to the particles and affect the accuracy of the analysis.
By adding water to the sieving process, the dirt and silt can be washed off, allowing for more accurate measurements.
Continue exploring, consult our experts
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