Laboratory mills, used primarily for sample prep prior to analysis, use particle size reduction (comminution) to grind or homogenize wet, dry, hard, soft, elastic, brittle, and fibrous materials. Mills and grinders are used in labs in widely varying scientific areas, including chemistry, pharmaceuticals, food analysis, materials testing, and life science. Disk, hammer, mortar, planetary ball, rotor, and cutting mills are available to achieve coarse, mid-range, and fine results, all the way down to the nano range, <0.1 µm. Cryogenic mills, or freezer mills, are a type of unit that freezes a material prior to reducing its particle size.
What to consider when choosing a laboratory mill?
When purchasing a mill, power, speed, and cleanability are useful parameters; however, it is also important to keep in mind the instrument’s throughput, reproducibility, and yield, as well as the option of a cooling system, if necessary.
Compare and request a quote for laboratory mills from various manufacturers:
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| Company | RETSCH | RETSCH | RETSCH | RETSCH |
| Item | Mixer Mill MM 400 | Cutting Mill SM 50 | Cyclone Mill TWISTER | High Energy Ball Mill Emax |
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| Catalog Number | MM 400 | SM 50 | Twister | Emax |
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| Description | The mixer mill MM 400 is a compact versatile bench-top unit, which has been developed specially for dry, wet and cryogenic grinding of small amounts of sample.
It can mix and homogenize powders and suspensions in only a few seconds. It is also perfectly suitable for the disruption of biological The mixer mill MM 400 is a compact versatile bench-top unit, which has been developed specially for dry, wet and cryogenic grinding of small amounts of sample.
It can mix and homogenize powders and suspensions in only a few seconds. It is also perfectly suitable for the disruption of biological cells as well as for DNA/RNA extraction. With its high performance and great flexibility the MM 400 is a unique product in the market.
Features - Reproducible, efficient grinding, mixing and homogenization in seconds
- Powerful grinding by impact and friction, up to 30 Hz for up to 20 samples per run
- 3 different grinding modes (dry, wet or cryogenic)
- Screw-top grinding jars for leak-proof grinding
- 9 SOPs can be stored
- Wide range of accessories including various jar and ball sizes, adapter racks, grinding tool materials, CryoKit
... Read More | The SM 50 is the world's most powerful benchtop cutting mill with a standard one phase power plug. Its 1.5 kW motor drives a large rotor, delivering impressive high-speed cutting power. The max. speed is 4,000 rpm and can be adjusted to suit various applications. The EasyInspect hopper operates on aThe SM 50 is the world's most powerful benchtop cutting mill with a standard one phase power plug. Its 1.5 kW motor drives a large rotor, delivering impressive high-speed cutting power. The max. speed is 4,000 rpm and can be adjusted to suit various applications. The EasyInspect hopper operates on a batch-wise feeding system and can process large sample pieces up to 50 mm with ease. The compact powerhouse features an internal cyclone system, ensuring effortless and efficient processing of various materials. The push-fit grinding chamber is the first in the world which can be taken out for proper cleaning. With its innovative design featuring a removable milling chamber, the SM 50 simplifies cleaning, saving up to 30 % process time. At the same time, the unrivaled powerful benchtop cutting mill with a single phase power plug allows up to 100 % sample recovery and contamination-free sample preparation.
- pulverization of samples down to 250 micron
- integrated cyclone technology
- easy cleaning thanks to push fit accessories including the grinding chamber
- for samples up to 50 mm
- less surfaces-less dust
- Superior cutting speed of 27 m/s.
- 3 double acting cutting bars result in 18 cutting events per round and a specific cutting length of 864 mm per round for superior cutting efficiency.
- Comprehensive and convenient door opening mechanisms with a pivoting handle
- 9 different sieve sizes from 10 mm down to 0.25 mm for standard application or for grinding without heavy-metal contamination
two different rotor types
... Read More | The cyclone mill TWISTER is specially designed for the processing of foods and feeds for subsequent NIR analysis. The optimized form of rotor and grinding chamber generates an air jet which carries the ground sample through the integrated cyclone into the sample bottle. The air jet prevents the The cyclone mill TWISTER is specially designed for the processing of foods and feeds for subsequent NIR analysis. The optimized form of rotor and grinding chamber generates an air jet which carries the ground sample through the integrated cyclone into the sample bottle. The air jet prevents the material from heating up, thus preserving the moisture content.
The provided sieves guarantee an optimum particle size distribution so that it is not necessary to recalibrate the NIR spectrometer. The rotor speed can be adjusted in 3 steps allowing for perfect adaptation to the sample requirements. Cleaning the mill is quick and easy as the air jet effects a complete discharge of the material from the grinding chamber.
This new cyclone mill in proven RETSCH quality optimizes the reproducible sample preparation to NIR analysis thus allowing for meaningful and reliable analysis results.
Features - Ideal for grinding feeds, grains, forage and other similar products
- 3 controlled speeds
- Cyclone separator with 250 ml collecting bottle for quick extraction of sample
- No cross contamination thanks to easy cleaning
- Convenient operating panel
- Professional industrial design with long lifetime
... Read More | The High Energy Ball Mill Emax from Retsch achieves fine particles in the nanometer range through high friction and impact, while maintaining a narrow particle size distribution through thorough sample mixture. This mill not only reduces grinding time, but also removes the need to cool down. The The High Energy Ball Mill Emax from Retsch achieves fine particles in the nanometer range through high friction and impact, while maintaining a narrow particle size distribution through thorough sample mixture. This mill not only reduces grinding time, but also removes the need to cool down. The High Energy Ball Mill Emax can be used across various application fields including agriculture, biology, chemistry, environmental, geology, pharmaceuticals, and more.
Features : - faster and finer grinding than any other ball mills
- speed of 2000 min-1
- unique water cooling system
- temperature-controlled grinding
- narrow particle size distribution
- patented drive concept
- range of jar materials allow for contamination free grinding
... Read More |
| Principle | Impact and Friction | Cutting and Shearing | Impact and Friction | Impact and Friction |
| Sample Size | < = 8 mm | < 50 mm | <10 mm | < 5 mm |
| Sample Type | Hard, Medium-Hard, Soft, Brittle, Elastic or Fibrous | Soft, Medium-Hard, Fibrous | Fibrous or Soft | Medium-hard, hard, brittle, fibrous - dry or wet |
| Applications | Size Reduction, Mixing, Homogenization, Cell Disruption and Cryogenic Grinding: Agriculture, Biology, Chemistry / Plastics, Construction Materials, Engineering / Electronics, Environment / Recycling, Food, Geology / Metallurgy, Glass / Ceramics, Medicine / Pharmaceuticals | agriculture, chemicals / plastics, construction materials, electronics, environmental / recyling, food / feed, pharma / biotech / medtech, power generation / energy | Grinding Prior to NIR Analysis: Agriculture, Foods / Feeds, Medicine / Pharmaceuticals | Nano grinding, size reduction, homogenizing, mechanical alloying, colloidal milling, high energy comminution |
| Speed | 3 to 30 Hz | 500 to 6,000 min-1 | 10,000 to 14,000 min-1 | 300 to 2,000 min-1 |
| Rotor Type | grinding jar and balls | parallel section rotor / 3-disc rotor, 0.25-10 mm sieves | TWISTER rotor | Inquire |
| Final Fineness | ~ 5 um | < 0.25 mm | < 500 um | < 80 nm |
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