Yamato WG205-220V Auto Still Lab Water Purification System
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The Yamato Auto Still WG205-220V is a compact benchtop water purification system that produces both deionized (Type 1) and distilled (Type 2) water through a combined ion-exchange and distillation process. Designed for laboratories requiring high-purity water from standard tap water, the WG205 features easy-to-replace consumable cartridges, a built-in 20L storage tank, and automatic boiler drainage — all in a space-saving footprint.
Key Features:
- Produces both deionized (ASTM Type 1) and distilled (Type 2) water from tap water
- Pre-treatment cartridge removes bacteria, trihalomethane, residual chlorine, organics, and particulates
- High-performance 4L ion-exchange resin cartridge (CPC-S) for low conductivity and TOC
- Hard glass condenser for durable, contamination-free distillation
- Ceramic heater 1.2kW for consistent distillation output
- Built-in 20L polyethylene distilled water storage tank
- Automatic boiler drainage function
- Consumable replacement indicator display
- Compact design — suitable for areas with limited bench space
- 220V operation with external transformer — suitable for international lab environments
- Made in Japan
✓ Ships directly from Yamato USA (Santa Clara, CA)
✓ Orders typically process and ship within 3–5 business days
✓ Includes Yamato's full 1-year manufacturer warranty
✓ 7-day price match guarantee from date of purchase
✓ Alaska, Hawaii, and international shipping available — contact us for rates
The Yamato Auto Still WG205-220V is a compact benchtop water purification system that produces both deionized (Type 1) and distilled (Type 2) water through a combined ion-exchange and distillation process. Designed for laboratories requiring high-purity water from standard tap water, the WG205 features easy-to-replace consumable cartridges, a built-in 20L storage tank, and automatic boiler drainage — all in a space-saving footprint.
Key Features:
- Produces both deionized (ASTM Type 1) and distilled (Type 2) water from tap water
- Pre-treatment cartridge removes bacteria, trihalomethane, residual chlorine, organics, and particulates
- High-performance 4L ion-exchange resin cartridge (CPC-S) for low conductivity and TOC
- Hard glass condenser for durable, contamination-free distillation
- Ceramic heater 1.2kW for consistent distillation output
- Built-in 20L polyethylene distilled water storage tank
- Automatic boiler drainage function
- Consumable replacement indicator display
- Compact design — suitable for areas with limited bench space
- 220V operation with external transformer — suitable for international lab environments
- Made in Japan
✓ Ships directly from Yamato USA (Santa Clara, CA)
✓ Orders typically process and ship within 3–5 business days
✓ Includes Yamato's full 1-year manufacturer warranty
✓ 7-day price match guarantee from date of purchase
✓ Alaska, Hawaii, and international shipping available — contact us for rates
Technical Specifications / Comparison
| Model | WE200 | WG205-115V / 220V | WA301B | WA311B |
| Series | Pure Line | Auto Still | Auto Pure | Auto Pure |
| Purification Method | RO membrane → Ion exchange → Filtration | Ion exchange → Distillation | Ion exchange → Filtration (polishing) | Ion exchange → Filtration (polishing) |
| Purified Water Type | Deionized (Type 1 / A4) | Deionized (Type 1) + Distilled (Type 2) | Deionized (Type 1) | Deionized (Type 1) |
| Resistivity | Up to 18.2 MΩ·cm | 5-stage conductivity LED | 18.2 MΩ·cm | 18.2 MΩ·cm |
| TOC | <50 µg/L | — | <15 ppb | <15 ppb |
| Bacteria | — | — | <1 cfu/ml | <1 cfu/ml |
| Flow Rate | 0.5–1.0 L/min | ~1.5 L/h (distilled) / ~1.0 L/min (DI) | 2.5 L/min | 2.5 L/min |
| Feed Water | Standard tap water | Standard tap water | Pre-treated only (<20 µS/cm) | Pre-treated only (<20 µS/cm) |
| Tank | None — continuous flow | 20L polyethylene tank | None — continuous flow | None — continuous flow |
| Final Filtration | 0.1µm membrane filter | Optional membrane filter | 0.2µm filter | 0.2µm filter |
| Power Source | 100–240VAC (universal) | 115V or 220V (external transformer) | 120V, 60Hz, 1.0A | 220V, 50Hz, 0.5A |
| Dimensions | W350 × D430 × H470 mm | W540 × D575 × H775 mm | 54.8 × 37 × 36.5 cm | 54.8 × 37 × 36.5 cm |
| Weight | ~30 kg | ~55 kg | 42 lbs dry / 47 lbs operating | 42 lbs dry / 47 lbs operating |
| Country of Origin | Japan | Japan | USA | USA |
| Price | $5,010 | $7,355 | $11,520 | $11,520 |
* The WE200 and WG205 connect directly to standard tap water. The WA301B and WA311B are polishing systems and require pre-treated feed water (RO/DI or distilled, <20 µS/cm) — they are not standalone purifiers.
WG205-220V Consumable Parts (Sold Separately):
- Pre-treatment cartridge PWF-1 (#253099)
- Ion-exchange resin cartridge CPC-S (#253080) — required, must be purchased separately
- Membrane filter MFRL727 (#9020010004, 2 pcs/set)
- Tank air vent filter AVF-1 (#9020020001)
Note: This unit must be connected to a drainage facility. Raw water pressure must be within 0.5–5 MPa range. Ion-exchange resin cartridge CPC-S is not included and must be purchased separately before use. 220V operation requires an external transformer.
Applications
The WG205 produces both ASTM Type 1 deionized water and Type 2 distilled water, making it suitable for a broad range of laboratory applications:
Buffers and Reagents
Both buffer and reagent preparation require water free from dissolved minerals, organics, and ions. The WG205's ion-exchange process delivers high-purity deionized water ideal for preparing pH-sensitive solutions.
Distillation-Required Applications
Certain academic protocols and analytical methods specifically require heat-treated distilled water. The WG205 produces Type 2 distilled water at ~1.5 L/h, suitable for these applications without a separate still.
General Laboratory Use
Suitable for glassware rinsing, standard solution preparation, autoclave feed water, and any application requiring consistent Type 1 or Type 2 purity water output.
