Ultra Centrifugal Mill
Model No. :
Model No. : ZM 300
Brand : Retsch
The ZM 300 is a high-performance ultra centrifugal mill engineered for the rapid size reduction of soft to medium-hard and fibrous materials. Utilizing a high-speed rotor-ring sieve system, it ensures optimum sample preparation for analytical laboratories requiring high throughput and consistent fineness.
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Variable speed control from 6,000 to 23,000 rpm
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Integrated temperature monitoring for heat-sensitive samples
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Maximum feed size up to 10 mm
− Features
The cyclone-suction system: Ideal for light & heat-sensitive materials
- Improved sample discharge from the grinding chamber
- Particularly suitable for large volumes
- Sample bottles of 0.25 / 0.5 / 3 and 5 liters
- Extra cooling for temperature sensitive samples
- Better sample discharge for light sample materials
- Ideal for cryogenic grinding
Increased reproducibility through temperature monitoring via integrated temperature sensor
- Measurement of the temperature of the cassette lid near the ring sieve
- The temperature is constantly shown in the mill’s display
- Continuous monitoring of the grinding process to detect deviations without fail
- Improved reproducibility for temperature sensitive samples
Convenient operation and easy cleaning
- Touch display with rotary knob for convenient parameter setting
- Cassette temperature and load shown during grinding
- Prevention of overloads by feeding the sample too quickly
- A push-fit system without screws
- Easy insertion and removal without tools
- Quick cleaning of rotors and ring sieves
- Smooth surfaces of the machine for easy cleaning
Cryogenic grinding
- The ideal solution for pulverizing samples that cannot be reduced to the required fineness at room temperature
- Liquid nitrogen or dry ice are used to embrittle the sample material
- Volatile components are perfectly preserved
- Cryogenic grinding is easy to perform with the ZM 300
Convenient operation and easy cleaning
- Recommended for plastics or very temperature-sensitive samples
+ Technical Specifications
+ Standards
+ Resources
Features
The cyclone-suction system: Ideal for light & heat-sensitive materials
- Improved sample discharge from the grinding chamber
- Particularly suitable for large volumes
- Sample bottles of 0.25 / 0.5 / 3 and 5 liters
- Extra cooling for temperature sensitive samples
- Better sample discharge for light sample materials
- Ideal for cryogenic grinding
Increased reproducibility through temperature monitoring via integrated temperature sensor
- Measurement of the temperature of the cassette lid near the ring sieve
- The temperature is constantly shown in the mill’s display
- Continuous monitoring of the grinding process to detect deviations without fail
- Improved reproducibility for temperature sensitive samples
Convenient operation and easy cleaning
- Touch display with rotary knob for convenient parameter setting
- Cassette temperature and load shown during grinding
- Prevention of overloads by feeding the sample too quickly
- A push-fit system without screws
- Easy insertion and removal without tools
- Quick cleaning of rotors and ring sieves
- Smooth surfaces of the machine for easy cleaning
Cryogenic grinding
- The ideal solution for pulverizing samples that cannot be reduced to the required fineness at room temperature
- Liquid nitrogen or dry ice are used to embrittle the sample material
- Volatile components are perfectly preserved
- Cryogenic grinding is easy to perform with the ZM 300
Convenient operation and easy cleaning
- Recommended for plastics or very temperature-sensitive samples
Technical Specifications
| Applications | fine grinding |
| Field of application | agriculture, biology, chemistry / plastics, construction materials, engineering / electronics, environment / recycling, food, geology / metallurgy, medicine / pharmaceuticals |
| Feed material | soft, medium-hard, brittle, fibrous |
| Size reduction principle | impact, shearing |
| Material 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 cyclon |
| Speed at 50 Hz (60 Hz) | 6,000 – 23,000 min-1, free selectable |
| Rotor peripheral speed | 31 – 119 m/s |
| Rotor diameter | 99 mm |
| Types of rotors | 6-tooth rotor / 12-tooth rotor / 24-tooth rotor |
| Material of grinding tools | stainless steel, titanium, stainless steel with wear-resistant coating |
| 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 |
| Setting of grinding time | no |
| Collector capacity | 900 ml with standard cassette 1200 ml with volume cassette 5000 ml / 3000 ml / 500 ml / 250 ml with cyclone |
| Drive | 3-phase asynchronous motor with frequency converter |
| Power connection | 1-phase |
| Protection code | IP 30 |
| Power consumption | 1750 VA (200..240V), 1400 VA (110..120V) |
| W x H x D closed | 452 x 431 x 426 mm |
| Net weight | ~ 38 kg |
*depending on feed material and instrument configuration/settings
Application & Standards
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