MM 400: Mixer Mill
Brand: Retsch | Category: Scientific & Laboratory Equipment
Multipurpose mixer mill for dry, wet and cryogenic grinding of small sample quantities, and for cell disruption in reaction vials. Two jars oscillate radially at 3 to 30 Hz, and typical grinding times are 30 seconds to 2 minutes. It also handles mixing and homogenisation, which makes it a general purpose bench unit.
Technical Specifications
| Parameter | Value |
|---|---|
| Feed material | hard, medium-hard, soft, brittle, elastic, fibrous |
| Size reduction principle | impact, friction |
| Final fineness | ~ 5 µm |
| Batch size / feed quantity | max. 2 x 20 ml |
| Vibrational frequency | 3 - 30 Hz (180 - 1800 min-1) |
| Typical mean grinding time | 30 s - 2 min |
| Max. grindig time | 99 h |
| 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, PTFE, PMMA |
| Grinding jar sizes | 1.5 ml / 5 ml / 10 ml / 25 ml / 35 ml / 50ml |
| Setting of grinding time | digital, 10 s - 8 h |
| Electrical supply data | 100-240 V, 50/60 Hz |
| Power connection | 1-phase |
Published manufacturer data for the listed model or variants. Confirm the exact configuration, accessories and test conditions in the quotation. Checked 2026-09-29.
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