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 | XRD-Mill McCrone Laboratory Mill | CryoMill | Mortar Grinder RM 200 | Rotor Beater Mill SR 300 |
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| Catalog Number | MCCrone | CryoMill | RM 200 | SR 300 |
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| Description | The XRD-Mill McCrone was specially developed for the preparation of samples for subsequent X-ray diffraction (XRD). The mill is used for applications in geology, chemistry, mineralogy and materials science, quality control as well as R&D. Because of its unique grinding motion, the XRD-Mill McCrone The XRD-Mill McCrone was specially developed for the preparation of samples for subsequent X-ray diffraction (XRD). The mill is used for applications in geology, chemistry, mineralogy and materials science, quality control as well as R&D. Because of its unique grinding motion, the XRD-Mill McCrone is particularly effective for this analytical method: The 48 cylindrical grinding elements grind the samples gently via friction. The result is a short grinding time with almost no sample loss and an exceptionally narrow particle size distribution. The crystal lattice is almost entirely preserved during grinding operation, a pre-requisite for meaningful X-ray diffraction results.
Features: - Crystal lattice preserved during grinding operation
- Very narrow and reproducible particle size distribution
- Minimal cross contamination
- Compact, bench-top sized model
- Suitable for dry and wet grinding
... Read More | The CryoMill is a laboratory ball mill specifically designed for this application. It features an integrated cooling system which continually cools the grinding jar with liquid nitrogen before and during the grinding process. Thus, the sample is embrittled and volatile components are preserved.
The The CryoMill is a laboratory ball mill specifically designed for this application. It features an integrated cooling system which continually cools the grinding jar with liquid nitrogen before and during the grinding process. Thus, the sample is embrittled and volatile components are preserved.
The liquid nitrogen is continually supplied from an autofill system in the exact amount required to keep the temperature at –196 °C. The CryoMill's versatility makes it the ideal grinder for sample quantities up to 20 ml.- powerful grinding by impact and friction with up to 30 Hz
- pulverization of two samples down to 5 micron
- The user never comes into direct contact with LN2 which ensures a high degree of operational safety
- adapter for keeping 2 ml plastic tubes or 2 ml steel tubes available
- special jar zirconium oxide available for heavy-metal free grinding
- suitable forgrinding in interval
- 3 different grinding modes (dry, wet or cryogenic)
- memory for 9 SOPs
- Screw-Top jars
... Read More | The Mortar Grinder RM 200 can mix and homogenize powders, suspension and pastes even with high viscosity. The RM 200 is suitable for the proper and reproducible sample preparation to analytical fineness.
It substitutes cumbersome hand mortars by a high performance drive with electronic control. TheThe Mortar Grinder RM 200 can mix and homogenize powders, suspension and pastes even with high viscosity. The RM 200 is suitable for the proper and reproducible sample preparation to analytical fineness.
It substitutes cumbersome hand mortars by a high performance drive with electronic control. The grinding set can be cooled and heated and is very easy to clean. Grinding sets of various material qualities are available which can be exchanged easily for optimum adaptation to various grinding tasks.
Features - Dry, wet and cryogenic grinding
- Reproducible results due to adjustable pestle and scraper pressure
- Closed, dust tight grinding chamber with windows
- Easy exchange of mortar and pestle without tools
- Performance display for load cotrol
- Adjustable pestle and scraper pressure
- Wide range of materials for contamination free grinding
- 3 scraper materials (vulkollan, beech wood, PTFE)
... Read More | The Rotor Beater Mill SR 300 is suitable for coarse and fine size reduction, either in batches or continuously. It can process dry, soft, medium-hard, organic and inorganic substances.
Its high speed in comparison to the SR 200 allows a significantly higher throughput and fineness.
The SR 300 isThe Rotor Beater Mill SR 300 is suitable for coarse and fine size reduction, either in batches or continuously. It can process dry, soft, medium-hard, organic and inorganic substances.
Its high speed in comparison to the SR 200 allows a significantly higher throughput and fineness.
The SR 300 is intended for universal use: from sample preparation in laboratories up to preparing sample batches in pilot plants or production facilities. The grinding chamber, the feed hopper and the material inlet are completely made from high quality stainless steel.
Features
- Suitable for batchwise operation of larger quantities
- Central locking device
- Wide range of accessories including various collection and feeding systems, rotors and sieves
- High final fineness
- Exchangeable grinding and sieve inserts
- Grinding chamber, feed hopper and material inlet and outlet of stainless steel
- Optional grinding inserts 180° for grinding of hard-brittle materials by additional impact
- Optional distance rotor to reduce frictional heat
- Removable hopper for easy cleaning
- Motor brake
- Defined final fineness due to bottom sieves with aperture sizes from 0.08 - 10 mm
... Read More |
| Principle | Friction | Impact and Friction | Pressure and Friction | Impact and Shearing |
| Sample Size | <0.5 mm | ≤8 mm | < 8 mm | < 15 mm |
| Sample Type | Medium-hard, Hard, Brittle, Fibrous | Hard, Medium-Hard, Soft, Brittle, Elastic or Fibrous | Soft, Hard, Brittle or Pasty | Soft or Medium-Hard |
| Applications | Grinding, Mixing and Triturating, Dry and Wet | mechanochemistry, mechanical alloying, size reduction, mixing, homogenization, cryogenic grinding; agriculture, biology, chemistry / plastics, construction materials, engineering / electronics, environment / recycling, food, geology / metallurgy, glass / ceramics, medicine / pharmaceuticals, cell disruption | Grinding, Mixing and Triturating - Dry and Wet: Agriculture, Biology, Chemistry / Plastics, Construction Materials, Food, Geology / Metallurgy, Glass / Ceramics, Medicine / Pharmaceuticals | Size Reduction and Deagglomeration: Agriculture, Chemistry / Plastics, Construction Materials, Environment / Recycling, Food, Medicine / Pharmaceuticals |
| Speed | 1000 to 1500 min-1 | 3 to 30 Hz | 100 min-1 | 8100 or 9700 min-1 |
| Rotor Type | <0.5 mm | grinding jar and balls | mortar and pestle | Rotor Beater, Standard and Distance |
| Final Fineness | <1 µm | ~ 5 um | < 10 um | < 50 um |
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