Yamato DC401 Freeze Dryer, 4L (−45°C Refrigerated Cold Trap) Overview
The Yamato Scientific DC401 Freeze Dryer with Refrigerated Cold Trap is a benchtop lyophilizer built around a 4 L drying capacity and a trap cooling temperature of -45°C. LabSupplies.com supplies this main unit as an authorized dealer, delivering a genuine Yamato Scientific instrument for sample preservation, reagent stabilization, and small-batch lyophilization.
A stainless steel cylindrical cold trap, measuring Dia. 153 × H235 mm, captures sublimated moisture with a 0.6 L dehumidifying capacity. The Hot Gas Bypass System refreezes and releases ice smoothly, eliminating manual scraping. A Pirani vacuum gauge monitors chamber pressure, while automatic safety vacuum venting prevents pump-oil backflow during power loss.
Each unit runs on AC115V, 12 A (50/60 Hz) and reaches -45°C from 20°C in roughly 50 minutes. External dimensions are 300 × 450 × 920 mm with a weight near 60 kg, and integrated casters keep the system mobile. Manufactured in Japan, it ships with vacuum silicone grease and a vacuum hose.
Key Features
- Refrigerated cold trap: stainless steel cylinder reaches -45°C, cooling from 20°C in about 50 minutes.
- Hot Gas Bypass defrost: refreezes and removes accumulated ice smoothly without manual scraping.
- Contaminant-free venting: automatic safety vacuum venting prevents oil backflow on power-off or power failure.
- Pirani vacuum gauge: monitors chamber pressure throughout the lyophilization cycle.
- Layered safety devices: electric leakage breaker with overcurrent protection, refrigerator overload relay, back-flow prevention valve, and a safety valve linked to the vacuum-pump service receptacle.
- Mobile benchtop design: 400 W air-cooled refrigeration with R404A refrigerant, mounted on casters for easy relocation.
How to Choose the Right Freeze Dryer
Matching a freeze dryer to your workflow means weighing trap temperature, capacity, site power, and defrost handling against the samples you process. Use these axes to confirm the DC401 fits your lab.
- Trap cooling temperature: a -45°C trap suits aqueous samples and standard buffers; lower-eutectic solvents may require a colder trap.
- Drying capacity: the 4 L chamber and 0.6 L dehumidifying capacity define how much moisture you can collect per run.
- Voltage and power: verify your circuit supports the chosen 115V or 220V configuration before ordering.
- Defrost method: the Hot Gas Bypass System removes ice without scraping, reducing downtime between batches.
- Footprint and mobility: confirm the 300 × 450 × 920 mm body and ~60 kg weight suit your bench, then use the casters to reposition.
- Configuration needs: this is the main unit; budget separately for drying chamber, manifold, mounting flasks, caps, and glass containers.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 4 L |
| Voltage | 115V |
| Type | Benchtop freeze dryer with refrigerated cold trap |
| Trap Cooling Temperature | -45°C |
| Time to Reach Minimum Temperature | 50 min (20°C to -45°C) |
| Dehumidifying Capacity | 0.6 L |
| Internal Capacity | ~4 L |
| Refrigeration System | Air cooling, 400 W |
| Refrigerant | R404A (300 g ±5 g) |
| Vacuum Gauge | Pirani vacuum gauge |
| Trap Defrost | Hot Gas Bypass System (ice refrozen and removed smoothly without manual scraping) |
| Contaminant-Free System | Automatic safety vacuum venting prevents oil backflow on power-off or power failure |
| Trap Material / Shape | Cylinder, stainless steel |
| Trap Dimensions | Dia. 153 × H235 mm |
| Exhaust Port | Dia. 17 mm (vacuum pump connection) |
| Operating Ambient Temperature | 5°C to 30°C |
| Safety Devices | Electric leakage breaker with overcurrent protection, refrigerator overload relay, back-flow prevention valve, safety valve linked with vacuum-pump service receptacle |
| Drain | Vacuum hose with stopper |
| Mobility | Highly mobile on casters |
| External Dimensions (W×D×H) | 300 × 450 × 920 mm |
| Weight | ~60 kg |
| Country of Origin | Japan |
| Included Accessories | Vacuum silicone grease, vacuum hose |
| Configuration | Main unit — drying chamber, manifold, mounting flasks, flask caps and glass container sold separately |
| Power Source | AC115V, 12 A (50/60 Hz) |
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| DC-401-115V | 115V | EA |
| DC-401-220V | 220V | EA |
Documentation
More in This Series
- Dc401 With 12 Port Flask Mounting Chamber & 5 Pcs. Of 120mL Dry Flask With Straight Glass Joint & Cap
- Dc401 With Manifold A (8 Port) & 5 Pcs. Of 120mL Dry Flask With Straight Glass Joint And Cap
Why Buy From LabSupplies.com
LabSupplies.com is an authorized Yamato Scientific dealer, so every DC401 ships as a genuine factory unit backed by the manufacturer warranty. Our team supports procurement specialists and lab managers from quote-free purchase through delivery.
- Authorized Yamato Scientific dealer: genuine instruments with full manufacturer warranty.
- In stock: ready to ship from USA inventory.
- Direct purchase: order online without back-and-forth quoting.
- Lab-equipment specialists: dedicated support for spec and configuration questions.
Frequently Asked Questions
What trap cooling temperature does the DC401 reach?
The DC401 cold trap reaches -45°C. It cools from 20°C to -45°C in approximately 50 minutes, supporting aqueous and standard buffer lyophilization.
What is the drying and dehumidifying capacity?
The DC401 provides roughly 4 L of internal drying capacity with a 0.6 L dehumidifying (ice-collection) capacity per run.
What voltage options are available, and what power does it draw?
The DC401 is offered in 115V and 220V configurations. The 115V version operates on AC115V, 12 A at 50/60 Hz, so confirm your circuit before ordering.
What is the cold trap made of, and how is it defrosted?
The cold trap is a stainless steel cylinder measuring Dia. 153 × H235 mm. A Hot Gas Bypass System refreezes and removes ice smoothly without manual scraping.
What are the external dimensions and weight?
External dimensions are 300 × 450 × 920 mm (W×D×H) with a weight of approximately 60 kg. Built-in casters keep the unit mobile on the bench.
Is the drying chamber and glassware included?
No. The DC401 is sold as the main unit. The drying chamber, manifold, mounting flasks, flask caps, and glass container are sold separately. Vacuum silicone grease and a vacuum hose are included.