Mixer Mill MM 400
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.
Application Examples
alloys, animal feed, bones, ceramics, cereal grains, chemical products, coal, drugs, electronic scrap, glass, hair, minerals, oil seeds, ores, paper, plant materials, plastics, sewage sludge, soils, tablets, textiles, tissue, waste samples, wood, wool, ...
Product Advantages
- 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
Features
| Applications | size reduction, mixing, homogenization, cell disruption, cryogenic grinding |
| Field of application | agriculture, biology, chemistry / plastics, construction materials, engineering / electronics, environment, food, geology / metallurgy, glass / ceramics, medicine / pharmaceuticals |
| Feed material | hard, medium-hard, soft, brittle, elastic, fibrous |
| Size reduction principle | impact, friction |
| Material feed size* | ≤ 8 mm |
| Final fineness* | ~ 5 µm |
| Batch size / feed quantity* | max. 2 x 20ml |
| No. of grinding stations | 2 |
| Setting of vibrational frequency | digital, 3 - 30 Hz (180 - 1800 min-1) |
| Typical mean grinding time | 30 s - 2 min |
| Dry grinding | yes |
| Wet grinding | yes |
| Cryogenic grinding | yes |
| Cell disruption with reaction vials | yes, up to 20 x 2.0 ml |
| Self-centering clamping device | yes |
| Type of grinding jars | screw top design |
| Material of grinding tools | hardened steel, stainless steel, tungsten carbide, agate, zirconium oxide, ... |
| Grinding jar sizes | 1.5 ml / 5 ml / 10 ml / 25 ml / 35 ml / 50ml |
| Setting of grinding time | digital, 10 s - 99 min |
| Storable SOPs | 9 |
| Drive | DC-Motor |
| Protection code | IP 30 |
| Power consumption | 150 W |
| W x H x D closed | 371 x 266 x 461 mm |
| Net weight | ~ 26 kg |
| Workplace related emission value | LpAeq 65 dB(A) |
| Documentation | Operation & Application Video |
| Standards | CE |
| *depending on feed material and instrument configuration/settings |
Function Principle
The grinding jars of the MM 400 perform radial oscillations in a horizontal position. The inertia of the grinding balls causes them to impact with high energy on the sample material at the rounded ends of the grinding jars and pulverize it. Also, the movement of the grinding jars combined with the movement of the balls result in the intensive mixing of the sample. The degree of mixing can be increased even further by using several smaller balls. If several small balls are used (e.g. glass beads) then, for example, biological cells can be disrupted. The large frictional impact effects between the beads ensure effective cell disruption.
Subject to technical modifications and errors
