The Yamato DC401 is a benchtop-class freeze dryer with a −45°C cold trap, 0.6 L dehumidify amount and about 4 L internal capacity. It defrosts by hot gas, reads vacuum with a Pirani gauge and vents automatically on power loss to stop oil back-flow. Changyu Bio quotes it by model number and ships worldwide.
DC401 specifications
| Model | DC401 (DC401-115V / DC401-220V) |
|---|---|
| Trap cooling temperature | −45°C |
| Time to reach minimum temperature | 50 min (20°C to −45°C) |
| Dehumidify amount | 0.6 L |
| Internal capacity | ~4 L |
| Trap dimensions | Ø153 × H235 mm |
| Refrigerator | Air-cooled, 400 W, coolant R404A |
| Trap defrost | Hot-gas defrost |
| Vacuum gauge | Pirani vacuum gauge |
| Bath | Cylinder, stainless steel |
| Vacuum pump connection | Ø17 mm |
| Ambient temperature range | 5–30°C |
| Safety | Earth-leakage breaker with overcurrent protection, refrigerator overload relay, back-flow prevention valve |
| External dimensions (W×D×H) | 300×450×920 mm |
| Power (50/60 Hz) | AC115 V 12 A / AC220 V 7 A |
| Weight | ~60 kg |
| Included accessories | Vacuum silicone grease, vacuum hose |
| Sold separately | Vacuum pump, chambers, manifolds, flasks, serum bottles and adapters |
Vacuum pump for the DC401
| Recommended vacuum pump | GLD-137CC (115 V / 220 V kits) |
|---|---|
| Pumping speed | 135 L/min (50 Hz) / 162 L/min (60 Hz) |
| Ultimate pressure | 0.67 Pa (gas ballast closed) / 6.7 Pa (open) |
| Pump weight / size | 27 kg; W170 × L488 × H250 mm |
Chambers and accessories
Configure the DC401 with a flask-mounting chamber, Manifold A (8 ports) or Manifold B (16 ports), a dry chamber for petri dishes or a closed dry chamber, plus dry flasks (120 / 250 mL), serum bottles (10 / 30 / 50 mL), ampule and test-tube adapters and round-bottom flasks (200–500 mL, T/S 29). Tell us your samples and we will list the parts you need.
Specifications from Yamato published product literature (BRO-DC-202405). Confirm the voltage version with your quotation.
Ordering from Changyu Bio
- Send the model, voltage (115 V or 220 V), the chamber/manifold you need, quantity and destination.
- Single units accepted; combine with other brands in one shipment; freight quoted separately; company-account USD T/T.
Common questions
How cold does the DC401 trap get?
The cold trap reaches −45°C, about 50 minutes from 20°C according to Yamato literature.
Is a vacuum pump included with the DC401?
No. The pump is sold separately; Yamato lists the GLD-137CC as the matching pump.
What can I dry on the DC401?
Samples in dry flasks, serum bottles, ampules, test tubes or petri dishes, using the flask-mounting chamber, a manifold or a dry chamber.