RETSCH ZM 300 Ultra Centrifugal Mill
The RETSCH 20.824.0002 Ultra Centrifugal Mill ZM 300 is a powerful and fast rotor mill for soft to medium-hard materials, temperature sensitive or fibrous substances. Also suitable for cryogenic grinding of temperature sensitive materials. With a variable speed range of 6,000 to 23,000 rpm this mill provides highest grinding performance and is easy to handle.
One of the key features of the Ultra Centrifugal Mill ZM 300 is the integrated temperature control. This ensures reproducibility even during long grinding times or when grinding large sample volumes. By monitoring the cassette temperature the mill allows fine adjustments to be made to improve reproducibility.
The ZM 300 has a wide range of rotors, ring sieves and cassettes so it is very versatile in sample preparation. The patented cassette system allows maximum sample recovery and easy cleaning, an optional cassette is available for higher sample volumes. The ring sieves have an aperture size range of 0.08 to 10 mm so the ZM 300 provides a defined final fineness for different applications.
The mill has different collecting vessels for different sample volumes from 250 ml to 4.5 l. The ZM 300 can be equipped with an automated vibratory feeder and different cyclone systems to optimize the grinding process.
The integrated temperature sensor in the display allows to monitor the temperature during grinding. This helps to optimize the grinding process and to improve reproducibility by keeping the temperature increase moderate and preventing negative effects on the grinding results.
Compared to classic centrifugal mills like the ZM 200 the ZM 300 has a higher maximum speed of 23,000 rpm. This results in 15 to 20% finer particles depending on the material. So the ZM 300 provides higher final fineness and throughput especially for cryogenically pulverized polymer samples and fibrous materials like hay.
The RETSCH 20.824.0002 Ultra Centrifugal Mill ZM 300 is the solution for various applications like grinding of plastic materials, crushing of chicken feed and fine grinding. With its advanced features, robust design and excellent performance the ZM 300 is the standard for food and feed processing.
Rotor mills are used for high-speed size reduction of soft to medium-hard and temperature sensitive or fibrous materials.
The powerful Ultra Centrifugal Mill ZM 300 provides highest grinding performance and is easy to handle. The variable speed from 6,000 to 23,000 rpm allows gentle, neutral-to-analysis sample preparation in very short time.
Thanks to the integrated temperature monitoring system reproducibility is guaranteed even for long grinding times or large sample volumes.
The wide range of rotors, ring sieves and cassettes makes the ZM 30
Overview
The RETSCH Ultra Centrifugal Mill ZM 300 is a powerful and easy to handle rotor mill for high-speed size reduction of soft to medium-hard materials, temperature sensitive or fibrous substances. With the variable speed range of 6,000 to 23,000 rpm the mill provides highest grinding performance and is easy to use. The temperature monitoring system guarantees reproducibility even for long grinding times or large sample volumes. That’s why the ZM 300 is the perfect instrument for laboratories and industries where precise and reproducible results are required.
THE STANDARD FOR FOOD & FEED
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Gentle high-speed pulverization due to pre- and fine grinding in one run
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Optimum process control and reproducibility by temperature monitoring of the cassette
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Patented cassette system for maximum sample recovery and easy cleaning
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Cassette for sample volumes up to 600 ml
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Variable speed from 6,000 to 23,000 rpm
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Defined final fineness by ring sieves with 0.08 – 10 mm
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Collecting vessels for 250 ml to 4.5 l
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Automated vibratory feeder and various cyclone systems available
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Ensures sample homogenization for consistent results in food and feed processing
ULTRA CENTRIFUGAL MILL ZM 300REPRODUCIBILITY THROUGH TEMPERATURE MONITORING
The speed range from 6,000 to 23,000 rpm allows to adapt the grinding process to the sample by keeping the grinding time as short as possible and the temperature increase as low as possible. Too much heat can harm the grinding results, for example if moisture or volatile components escape.
The ZM 300 has an integrated temperature sensor which measures the temperature of the cassette lid near the ring sieve. The measured temperature is displayed on the mill’s display so the user can adjust the grinding process and improve reproducibility. Additionally the ZM 300 ensures a constant particle size distribution which is the key to reproducibility.
ULTRA CENTRIFUGAL MILL ZM 300HIGHEST SPEED FOR FINEST FINENESS AND HIGHEST THROUGHPUT
The maximum speed of classic centrifugal mills like the well-known ZM 200 is limited to 18,000 rpm (rotor peripheral speed 98 m/s). The ZM 300 reaches 23,000 rpm (rotor peripheral speed 118 m/s) and produces 15 to 20 % finer particles depending on the material. The ZM 300 is perfect for cryogenic grinding and produces finer particles.
The higher speed has the biggest impact on polymer samples which are cryogenically ground or fibrous materials like hay. Compared to models with 18,000 min-1 the throughput can be increased by 10 to 15%.
Technical Data
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Type: Ultra centrifugal mill
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Manufacturer: Retsch
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Model: ZM 300
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Sample throughput: 10-15% higher than 18,000 min-1
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Variable speed: 6,000-23,000 min-1
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Maximum speed: 23,000 min-1
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Rotor peripheral speed: 118 m/s
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Temperature sensor: Measures temperature of cassette lid near ring sieve
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Temperature monitoring: Adjust grinding process and improve reproducibility
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Grinding process: Can be adjusted to sample requirements
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Final fineness: 15-20% finer than 18,000 min-1
Operation and Maintenance
The Retsch Ultra Centrifugal Mill ZM 300 is designed for easy and safe operation. The large display and rotary knob make it easy to enter the maximum grinding performance combined with the acceptable parameters. The patented cassette principle and push-fit method eliminates the need for tools for insertion and removal. Rotors and ring sieves can be cleaned very easily and all parts that come into contact with the sample can be washed in the dishwasher or under running water. Regular maintenance is recommended to ensure optimal performance and longevity of the mill. This user-friendly design means the mill is always ready to use, minimizes downtime and maximizes productivity.
Accessories and Options
The Retsch Ultra Centrifugal Mill ZM 300 can be equipped with various accessories and options to increase performance and flexibility. These are:
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Automated vibratory feeder: For high-speed maximum grinding performance combined with speed
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Different cyclone systems: For sample collection
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Collecting vessels: For different sample volumes from 250 ml to 4.5 l
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Optional cassette: For higher sample volumes
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Rotor and ring sieve sets: For specific applications
These accessories and options allow you to customize the mill to your needs and get optimal performance for all applications.
Safety
The Retsch Ultra Centrifugal Mill ZM 300 is safe. The temperature monitoring system ensures the grinding process is adjusted and reproducible, reduces the risk of overheating or sample degradation. The mill has a secure and stable design with a strong base and a cover to prevent accidental start or exposure to moving parts. The mill meets international safety standards and regulations so you can work safely at all times.
APPLICATION EXAMPLES
Grind sizes of plastic materials (POM or PP) after grinding with different sieves and speeds. The 23,000 min-1 speed results in a higher fineness for all sieves than 18,000 min-1. For example 19% finer when grinding POM with 0.12 mm sieve at 23,000 min-1.
The maximum sample throughput, e.g. when grinding chicken feed with 0.5 mm ring sieve, can be increased by 16% when grinding at 23,000 min-1 instead of 18,000 min-1. The ZM 300 is perfect for sample preparation in all applications and gives consistent and reproducible results.
