Retsch Mixer Mill MM 500 Nano
The mixer mill MM 500 nano is a compact, versatile bench-top unit which has been developed specially for dry, wet and cryogenic grinding of up to 2 x 45 ml sample material within seconds. With a maximum frequency of 35 Hz, it generates enough energy to produce particles in the nanometer range.
The robust high-performance drive makes the mill suitable for long-term grinding processes up to 99 hours and thus very interesting for research and mechanochemistry.
Hence, the MM 500 nano is a unique mixer mill in the market to provide a real alternative to grinding in a planetary ball mill – with more comfortable handling and less warming effects.
ADVANTAGES THROUGH DESIGN
- Very easy, comfortable clamping and handling of the grinding jars
- Jars can stay clamped while taking a sub-sample or visual checks of fineness
- Ergonomic design with touch display for easy parameter setting
- 12 SOPs & 4 program cycles with up to 99 repeats to facilitate routine applications
FLEXIBILITY
- Equally suited for rapid pulverization <2 min and long-term grinding up to 99 hours
- Use one large grinding ball in the High Impact mode or several smaller balls in the High Friction mode
- Use the MM 500 nano for routine sample preparation applications, for nano-grinding or for research applications such as mechanochemistry and mechanical alloying
GRIND SIZES IN THE NANOMETER RANGE
- New jar design allows for optimized usage of jar volume also for wet grinding
- Final fineness < 100 nm possible thanks to maximized energy input at 35 Hz
- Less warming effects, thus grinding can usually be done without grinding breaks for cooling down
Result: You get your nano sample within the shortest time.
NANO-GRINDING OF TITANIUM DIOXIDE WITHOUT COOLING BREAKS
Nano grinding of 25 g titanium dioxide in a 125 ml grinding jar zirconium oxide with 275 g balls 0.1 mm, 30 ml 1% NaPO4 solution. A particle size of 90 nm was achievied after 120 minutes of grinding.
NEW SCREW-LOCK GRINDING JARS: BENEFITS FOR YOU
The new Screw-Lock grinding jars of the MM 500 nano are suitable for dry, wet or cryogenic grinding. The jar sizes (50 / 80 / 125 ml) are larger than those of the classic mixer mills, allowing for grinding 2 x 45 ml per batch. The jars are pressure-tight up to 5 bar, the integrated safety closure allows for convenient handling. The new jar design is very beneficial for wet grinding and pulverizing fibrous samples like hair.
Thanks to the flat lid, the nominal volume can be fully used, for instance when milling fibrous samples, or to ensure the optimum mixture of sample, small grinding balls and liquid for wet grinding.
Available materials include hardened steel, stainless steel, tungsten carbide and zirconium oxide ensuring contamination-free sample preparation. Aeration lids for all jar sizes and materials are available, e.g. for grinding under inert atmosphere.
NANO GRINDING OF ALUMINUM OXIDE IN THE MM 500 NANO
Narrow particle size distribution of aluminium oxide after grinding (Nano grinding of 30 g aluminum oxide in a 125 ml grinding jar zirconium oxide with 275 g balls 0.1 mm, 33 ml 0.5% NaPO4 solution)
TECHNICAL DATA
| Applications | mechanochemistry, mechanical alloying, size reduction, mixing, homogenization, cryogenic grinding |
| Field of application | agriculture, biology, chemistry / plastics, construction materials, engineering / electronics, environment / recycling, food, geology / metallurgy, glass / ceramics, medicine / pharmaceuticals |
| Feed material | hard, medium-hard, soft, brittle, elastic, fibrous |
| Size reduction principle | impact, friction |
| Material feed size* | <= 10 mm |
| Final fineness* | ~ 0.1 µm |
| Batch size / feed quantity* | max. 2 x 45 ml |
| No. of grinding stations | 2 |
| Vibrational frequency | 3 - 35 Hz (180 - 2100 min-1) |
| Typical mean grinding time | 30 s - 2 min |
| Dry grinding | yes |
| Wet grinding | yes |
| Cryogenic grinding | yes |
| Cell disruption with reaction vials | no |
| Type of grinding jars | screw-lock with integrated safety closure devices |
| Material of grinding tools | hardened steel, stainless steel, tungsten carbide, zirconium oxide |
| Grinding jar sizes | 50 ml / 80 ml / 125 ml |
| Setting of grinding time | digital, 10 s - 8 h |
| Total grinding time | 99 h |
| Storable SOPs | 12 |
| Number of storable cycle programs | 4 (with 99 repeats) |
| Electrical supply data | 100-120V, 50/60 Hz; 200-230V, 50/60Hz |
| Power connection | 1-phase |
| Protection code | IP 30 |
| Power consumption | 750 W |
| W x H x D closed | 690 x 375 x 585 mm |
| Net weight | ~ 60 kg |
| Standards | CE |
