Retsch
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| Brand | Retsch |
|---|---|
| Origin | Germany |
| Model | PM 400 |
| Instrument Type | Planetary Ball Mill |
| Sample Suitability | Hard, brittle, fibrous, soft to extremely hard materials |
| Feed Size | < 10 mm |
| Final Particle Size | < 0.1 µm (colloidal grinding) |
| Batch Volume | up to 4 × 220 mL or 8 × 20 mL |
| Grinding Platforms | 4 (standard), optional 2-platform configuration for mechanical alloying |
| Sun Wheel Diameter | 300 mm |
| Sun Wheel Speed | 30–400 rpm |
| Speed Ratio Options | 1:−2, 1:−2.5, 1:−3 |
| Drive Power | 1.5 kW |
| Net Weight | ~290 kg |
| Dimensions (W×H×D) | 836 × 1220 (1900) × 780 mm |
| Protection Class | IP 30 |
| Sound Pressure Level | LpAeq < 85 dB(A) |
| Compliance | CE certified |
| Grinding Jar Materials | Hardened steel, stainless steel, tungsten carbide, agate, sintered corundum, zirconium oxide |
| Jar Volumes | 12–500 mL |
| Programmable Parameters | 10 stored methods |
| Interface | RS 232 / RS 485 |
| Energy Input Measurement | Yes |
| Cooling | Automatic grinding chamber ventilation system |