The 200 Ultra Centrifugal Mill Grinder is a high-speed rotor mill designed for rapid size reduction of soft to medium-hard and fibrous materials. Here’s a detailed overview:
Key Features:
1. Principle of Operation:
– Uses a high-speed rotor (up to 20,800 rpm) to propel samples against a fixed grinding ring, achieving particle sizes as fine as <40 µm.
– Centrifugal force ensures efficient and uniform grinding.
2. Applications:
– Ideal for grinding dry samples, including:
– Chemicals, pharmaceuticals, food products.
– Plastics, plant materials, fibers.
– Light metals (e.g., aluminum), minerals, and more.
3. Grinding Options:
– Available with different rotors (e.g., 6-tooth or 12-tooth) and sieves (perforated or trapezoidal) for adjustable fineness.
4. Capacity & Throughput:
– Processes small to medium batches (typically grams to a few kilograms per run).
– Fast grinding due to high rotor speeds.
5. Safety & Usability:
– Equipped with safety interlocks and quick-release mechanisms for easy cleaning.
– Minimal heat generation due to short grinding times.
6. Common Models:
– Retsch ZM 200: A popular ultra-centrifugal mill with variable speed control and a wide range of accessories.
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Advantages Over Other Mills:
– Faster than traditional ball or knife mills.
– Less heat-sensitive due to rapid proces.jpg)
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– Suitable for heat-labile materials (unlike impact mills).
Limitations:
– Not suitable for very hard materials (e.g., ceramics, stones).
– Moist or sticky samples may require pre-drying.
Typical Use Cases:
– Preparing samples for HPLC, NIR, or spectroscopy.
– Grinding polymers for recycling analysis.
– Homogenizing plant tissues for DNA/RNA extraction.
Would you like details on pricing, accessories (sieves/rotors), or comparisons with other mills?