The disadvantages of sieve machines include limited resolution due to a restricted number of size fractions, inability to process wet particles, a minimum measurement limit of 50 µm, and potential time-consuming operation.
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Limited Resolution: Sieve machines typically use a stack of up to 8 sieves, which means that the particle size distribution is based on only 8 data points. This limitation significantly reduces the resolution of the analysis, making it less precise compared to methods that can provide more detailed size distributions.
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Inability to Process Wet Particles: Sieve analysis is strictly applicable to dry particles. This limitation restricts its use in industries where wet or moist materials are common, necessitating additional drying steps before sieving, which can be inconvenient and time-consuming.
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Minimum Measurement Limit: The smallest particle size that can be accurately measured using sieve machines is 50 µm. This minimum limit excludes the analysis of finer particles, which are common in many industries, such as pharmaceuticals and nanotechnology.
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Time-Consuming Operation: Depending on the material and the desired level of precision, sieve analysis can be quite time-consuming. The process involves manual handling and requires careful sieving through multiple layers, which can extend the duration of the analysis. This can be a significant drawback in industries where rapid analysis and processing are critical.
Overall, while sieve machines are useful for basic particle size analysis, their limitations in resolution, applicability to dry materials only, minimum size detection, and time efficiency make them less suitable for advanced or specialized applications.
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