The Yamato MFD-800 is a strong (high-capacity) magnetic stirrer built for chemical-synthesis work, a stir-only unit (no heating) rated to move up to 20 L of water-equivalent load at 50–1600 rpm. A neodymium magnet driven by a DC brushless motor produces enough coupling force to keep stirring even when the flask is lifted off the plate, over a stirrable range of roughly 40 cm. This is the 115V variant (0.25A); its international-voltage twin is the MFD-810.
Key Specifications
| SKU | MFD-800 |
| Type | Strong magnetic stirrer (stir only, no hot plate) |
| Max stirring capacity (H₂O) | 20 L |
| Speed range | 50–1600 rpm (set in 10 rpm increments) |
| Operating temperature range | 4 °C to 40 °C (set in 1 °C increments) |
| Plate material | Aluminum die casting, ceramic coating |
| Plate dimensions | ø135 mm |
| Motor | DC brushless motor (31 W) |
| Magnet | Neodymium |
| Display | White LED digital |
| Rotation modes | Constant speed, step-out detection, intermittent, auto-reverse, slow-up |
| Safety | Overcurrent fuse; stirrer-detachment (step-out) detection |
| Standard load capacity | 30 kg or less |
| Stirrable range | ~40 cm (15.7 in), light-load reference |
| External dimensions | W165 x D275 x H90 mm |
| Weight | 2.8 kg |
| Power source | AC 115V, 0.25A, 50/60 Hz |
| Voltage twin | MFD-810 (230V, 0.15A per brochure) |
| List price | $1,600.00 |
Application Profile
- Chemical-synthesis stirring. The primary design intent; strong magnetic coupling for demanding synthesis reactions.
- Large-volume mixing. Up to a 20 L water-equivalent load, well beyond a typical benchtop stir plate.
- Oil-bath synthesis. The brochure recommends pairing with Yamato BOG / BOS Series oil baths, which seat on the plate to resist slipping under vibration (oil bath sold separately).
- Continuous / elevated-vessel stirring. Strong coupling maintains stir even when the flask is raised off the plate.
- Corrosion-exposed benches. The ceramic-coated die-cast aluminum plate resists chemical spill and vapor.
Note: the MFD-800 is stir-only. For combined stir + heat, see the MFH-800/810 (magnetic stirrer with hot plate).
Design Architecture
A 31 W DC brushless motor drives a neodymium magnet beneath a ø135 mm ceramic-coated die-cast aluminum plate, delivering 50–1600 rpm in 10 rpm steps with a white-LED digital display. Speed is held across changing load through the drive, and the unit offers five rotation modes (constant speed, step-out (detachment) detection, intermittent, auto-reverse, and slow-up) selectable from the control panel.
Safety is handled by an overcurrent fuse and the stirrer-detachment detection function that flags when the stir bar has decoupled. The operating environment is rated 4–40 °C (this is ambient/operating range; the MFD has no heater). At 2.8 kg and W165 x D275 mm, it is a compact bench unit despite its 20 L / 30 kg load rating.
Frequently Asked Questions
Does the MFD-800 have a hot plate or heating? No. The MFD-800 is a strong magnetic stirrer that stirs only. It has no heater. For combined stir plus heat, see the MFH-800/810 (magnetic stirrer with hot plate).
How much can the MFD-800 stir? The MFD-800 is rated to move up to 20 L of water-equivalent load at 50–1600 rpm (set in 10 rpm increments), well beyond a typical benchtop stir plate.
Is the MFD-800 available in 230V? This is the 115V variant (0.25A); its voltage twin is the MFD-810 (230V, 0.15A per the brochure spec table).
What makes the MFD-800 a "strong" magnetic stirrer? A neodymium magnet driven by a 31 W DC brushless motor produces enough coupling force to keep stirring even when the flask is lifted off the plate, over a stirrable range of roughly 40 cm.
Can the MFD-800 be paired with an oil bath? Yes. The brochure recommends pairing it with Yamato BOG/BOS Series oil baths, which seat on the ø135 mm ceramic-coated plate to resist slipping under vibration (oil bath sold separately).
Ordering & Configuration
In the box (per brochure): 1 heat plate, 1 protective cover, 2 screw caps, 1 power cord, 1 spare fuse (internal circuit / service outlet).
Optional items (sold separately): OA154 protective cover (281395), OA143 pole set (281381), OA146 container fall-prevention frame (281384), OA147 stage for lab jacks (281385), OA183 power cord round-terminal 2 m (281587), OA144 aluminum block handle (281382), OA145 dual-handed aluminum block handle (281383), plus BOG / BOS Series oil baths.
At $1,600.00 the MFD-800 is a direct add-to-cart benchtop unit. Confirm voltage before ordering: this is the 115V SKU (0.25A); the MFD-810 is the international-voltage twin.
Warranty: per Yamato standard terms.
Voltage variants: MFD-800 (115V, this product) and MFD-810 (230V per brochure spec table), both $1,600.00.
