Renfert Twister vacuum mixer for dental laboratories
Référence: 1826.0000
Renfert Twister – High-Performance Vacuum Mixer for Dental Labs
Twister – Renfert Vacuum Mixer
Brand: Renfert | SKU: 18260000
High-torque vacuum mixing unit with a membrane pump for consistent mixes of stone, alginates and duplication materials, reducing micro-bubbles thanks to adjustable vacuum 70–100%.
Clear readout, intuitive input
Dental stone, alginate, duplications
~890 mbar max
110–240 V • 50/60 Hz • 180 W
Powerful, repeatable vacuum mixing for bubble-free results
The Renfert Twister delivers stable, reproducible mixes across everyday laboratory indications. With an adjustable vacuum and a wide speed range, you can fine-tune each cycle to the material’s viscosity, achieving denser models, cleaner pours and fewer finishing corrections.
Related products
Technical specifications
| Supply voltage | 110 V / 240 V |
| Frequency | 50 / 60 Hz |
| Power | 180 W |
| Pump flow | 16 l/min |
| Max. pressure | ~890 mbar |
| Bowl pressure | 80 mbar |
| Vacuum | Reduction 70 – 100% |
| Speed | 100 – 450 rpm |
| Dimensions (without stand) | 152 × 285 × 235 mm |
| Dimensions (with stand) | 230 × 640 × 295 mm |
| Weight (without stand) | 5.2 kg |
| Accessory | Stand (optional) |
What’s included
1 × Renfert Twister vacuum mixer with 500 cc bowl. Available in 220 V or 110 V.
Useful resources
FAQ
What is the benefit of the 70–100% adjustable vacuum?
The 70–100% adjustable vacuum lets you match air extraction to the material and the mix viscosity.
- For dense dental stone, higher vacuum significantly reduces micro-bubbles and improves the final mechanical strength.
- For sensitive alginates or duplication materials, slightly lower vacuum can prevent over-aspiration that may affect texture.
- This fine control improves homogeneity, flow and repeatability while limiting air re-introduction during pouring.
- Result: smoother, more accurate models with less finishing time and consistent quality across production.
Is Twister suitable for larger stone batches?
Yes. Twister is built around a high-torque drive and an efficient membrane pump, ensuring homogeneous mixing even with higher loads.
- The 100–450 rpm speed range combined with adjustable vacuum provides precise control of the mix rheology, limiting air inclusions and sedimentation.
- With the included 500 cc bowl, you cover most day-to-day dental laboratory indications.
- For repeat cycles, the clear display and ergonomic handling help you maintain consistent batches without overheating or performance drop-off.
What maintenance is recommended to keep it reliable?
Maintenance is straightforward: keep the unit clean, periodically check vacuum sealing, and inspect the bowl, lid and gaskets.
- Wipe splashes quickly (stone/alginates) to prevent build-up.
- Monitor vacuum performance—an unusual drop may indicate a gasket that needs replacing.
- Respect the power range and ventilation clearance to protect the pump.
- Use the linked repair guides above for common service operations.
- This preventive routine extends service life, stabilises cycles and protects daily mixing quality.
Any limitations when mixing duplication materials?
Twister is compatible with most duplication materials used in dental labs.
- However, always adjust speed and vacuum level to the product sensitivity—some formulations require gentler agitation to preserve viscosity and minimise foaming.
- Use shorter cycles and build vacuum progressively to avoid over-expansion.
- Follow the material manufacturer’s guidance for working/setting times.
- Rinse accessories immediately after use to prevent residues.
- With these settings, you’ll achieve stable, clean duplications ready for accurate pours.
Renfert Twister vacuum mixer for dental laboratories