Mortar Grinders can range from hand-powered to mechanical, and ensure a proper mix and grinding of sample material. Electronically controlled mortar grinders remove the additional work of hand-powered mortar grinders while ensuring highly reproducible sample preparation. Considerations that differentiate mortar grinders are cooling and heating capability, product maintenance difficulty, pestle material, pestle speed, pestle/scraper pressure. Additional parameters to consider when purchasing are feed material hardness, material feed size, final fineness, batch size, grinding chamber volume and power consumption of the unit.
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| Company | RETSCH | RETSCH | RETSCH |
| Item | Planetary Ball Mill PM 100 | Mixer Mill MM 400 | Mixer Mill MM 500 vario |
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| Catalog Number | PM 100 | MM 400 | MM 500 vario |
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| Description | Planetary Ball Mills are used wherever the highest degree of fineness is required. Apart from the classical mixing and size reduction processes, the mills also meet all the technical requirements for colloidal grinding and have the energy input necessary for mechanical alloying processes. The Planetary Ball Mills are used wherever the highest degree of fineness is required. Apart from the classical mixing and size reduction processes, the mills also meet all the technical requirements for colloidal grinding and have the energy input necessary for mechanical alloying processes. The extremely high centrifugal forces of the Planetary Ball Mills result in very high pulverization energy and therefore short grinding times.
The PM 100 CM is a convenient benchtop model with 1 grinding station. It operates in centrifugal mode mode, which leads to a more gentle size reduction process with less abrasion.
Features - Powerful and quick grinding down to nano range
- Perfect stability on lab bench thanks to FFCS technology
- Innovative counter weight and imbalance sensor for unsupervised operation
- Gentle grinding in centrifugal mode
- Comfortable parameter setting via display and ergonomic 1-button operation
- Automatic grinding chamber ventilation
- 10 SOPs can be stored
- Programmable starting time
- Power failure backup ensures storage of remaining grinding time
- Reproducible results due to energy and speed control
- Suitable for long-term trials and continuous use
- 2 different grinding modes (dry and wet)
- Optional pressure and temperature measuring system PM GrindControl
- Measurement of energy input
- Wide range of materials for contamination free grinding
- Safety Slider for safe operation
... Read More | 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 Mixer Mill MM 500 vario is a true multipurpose mill designed for dry, wet and cryogenic grinding of small volumes up to 6 x 20 ml. It mixes and homogenizes powders and suspensions with a frequency of 35 Hz within seconds – unbeatably fast and easy to operate. It is also very useful for The Mixer Mill MM 500 vario is a true multipurpose mill designed for dry, wet and cryogenic grinding of small volumes up to 6 x 20 ml. It mixes and homogenizes powders and suspensions with a frequency of 35 Hz within seconds – unbeatably fast and easy to operate. It is also very useful for mechanosynthesis applications and a grinding time up to 99 h. It is also the most suitable instrument for biological applications such as cell disruption for nucleic acids or protein extraction with a sample batch capacity of up to 50 samples- powerful grinding by impact and friction with up to 35 Hz
- pulverization of two samples down to 5 micron
- adapter for keeping 1.5, 2 or 5 ml plastic tubes or 2 ml steel tubes available
- adapter for keeping 4 x 50 ml conical tubes or 30 ml wide-mouth bottles available
- adapter for keeping 4 x 5 ml steel tubes available
- suitable for long-term grinding processes up to 8 h
- suitable for mechanochemistry applications
- 3 different grinding modes (dry, wet or cryogenic)
- memory for 8 SOPs and 4 program cycles
- Screw-Top jars from 5-50 ml
10 ml PMMA jars for RAMAN applications
... Read More |
| Principle | Impact and Friction | Impact and Friction | Impact and Friction |
| Sample Size | < 10 mm | < = 8 mm | ≤8 mm |
| Sample Type | Soft, Hard, Brittle or Fibrous - Dry or Wet | Hard, Medium-Hard, Soft, Brittle, Elastic or Fibrous | Hard, Medium-Hard, Soft, Brittle, Elastic or Fibrous |
| Applications | Pulverizing, Mixing, Homogenizing and Colloidal Milling: Agriculture, Biology, Chemistry / Plastics, Construction Materials, Engineering / Electronics, Environment / Recycling, Geology / Metallurgy, Glass / Ceramics, Medicine / Pharmaceuticals | 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 | 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 |
| Speed | 100 to 650 min-1 | 3 to 30 Hz | 3 to 35 Hz |
| Rotor Type | grinding jar and balls | grinding jar and balls | grinding jar and balls |
| Final Fineness | < 1 um or < 0.1 um for Colloidal Grinding | ~ 5 um | ~5 µm |
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