ZM 300: Ultra Centrifugal Mill
Brand: Retsch | Category: Scientific & Laboratory Equipment
Rotor mill that grinds soft, medium hard, brittle and fibrous material to below 40 µm by impact and shearing between a rotor and a fixed ring sieve. Speed is freely selectable up to 23,000 rpm and the ring sieve sets the final fineness, so one mill covers a wide fineness range. Temperature monitoring protects heat sensitive samples.
Selected manufacturer specifications
| Parameter | Value |
|---|---|
| Max. feed size | 10 mm |
| Final fineness | 40 µm |
| Batch size / feed quantity | 300 ml with standard cassette ; 600 ml with volume cassette ; 4500 ml / 2500 ml / 450 ml / 230 ml with cyclone |
| Speed at 50 Hz (60 Hz) | 6,000 - 23,000 min-1, free selectable |
| Rotor peripheral speed | 31 - 119 m/s |
| Sieve sizes | trapezoid holes 0.08 / 0.12 / 0.20 / 0.25 / 0.50 / 0.75 / 1.00 / 1.50 / 2.00 mm ; round holes 3.00 / 4.00 / 5.00 / 6.00 / 10.00 mm |
| Collector capacity | 900 ml with standard cassette ; 1200 ml with volume cassette ; 5000 ml / 3000 ml / 500 ml / 250 ml with cyclone |
| Power connection | 1-phase |
| Power consumption | 1750 VA ((200..240V), 1400 VA (110..120V) |
| W x H x D closed | 452 x 431 x 426 mm |
Selected manufacturer data. Achievable fineness, throughput and preparation time depend on the sample, grinding tools and operating settings. Named accessories and optional configurations remain separate; confirm the exact equipment and electrical supply in the quotation. Checked 2026-09-29.
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