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HOMEProductsWater PurifiersWG203/WG250B/WG250W/WG1000
AUTOSTILL High-performance models conforming with JIS K0557 A4, for reducingTOC value

Production of distilled water
WG203/250 1.8L/h
WG1000 5L/h
Capacity of distilled water storage tank
WG203 20L
WG205 30L
WG1000 100L

PDF Catalog

Product code 253129 253130/253131 253132
Model WG203 WG250B/WG250W WG1000
Treatment process Ion exchange -> Distillation Ion exchange -> Distillation -> Filtration
Raw water feeding Connection to a tap water faucet with a one-touch coupler (with a sluice valve)
Waste water discharging Drain water connector on both sides for the connection of a drain hose
Product water Deionized water and distilled water
Production of distilled water Approx. 1.8L/hr. Approx. 5L/hr.
Collection of distilled water Approx. 1L/min.
Collection of deionized water 0.5 - 1L/min.
Range of production Continuous production 0.1 - 30L/continuous production 0.1 - 100L/continuous production
Composition Condenser Hard glass
Heater Ceramic heater 1.4 kW Ceramic heater 1.9 kW X2
Pretreatment cartridge 0.1µm diameter hollow fiber + activated carbon
Ion-exchange resin cartridge CPC-S 4L × 1 (highly refined resin with activated carbon) CPC-S 4L × 2 (highly refined resin with activated carbon)
Final filter of distilled/deionized water Option 0.1 µm membrane filter × 2
Leakage detection Water leakage activates a leak sensor, which forcefully shuts down the feed water solenoid valve.
Distilled water storage tank 20L polyethylene tank 30L polyethylene tank 100L polyethylene tank
Distilled water UV lamp sterilizer Option
Product water intake tray Drawer type, load capacity 10 kg Drawer type, load capacity 20 kg
Multifunctional distilled water recovery port Right side × 1
Level sensor Two-step reed switch Five-step reed switch
Specification Raw water feed pressure 0.5-5 × 100 kPa (0.5-5 kgf/cm2)
Power supply 100V AC , 15A 200V AC, 20A, Single phase
External dimension*1/weight 600 mmW×575 mmD×780 mmH,Approx. 48 kg 600 mmW×660 mmD×780 mmH,Approx. 55 kg 600 mmW×660 mmD×1650 mmH,Approx. 105 kg
and settings
Level indications Communicating tube LED
Quality indication Five-step LED for indicating conductivity Digital indication (conductivity or resistivity)
Other indications Replacement consumable parts (ion-exchange resin cartridge, pretreatment cartridge, UV sterilizing lamp, membrane filter ), error message, alarm message, history of consumable part replacements (up to 20 times for each consumable part), history of error messages, default language in Japanese or English, requirement of maintenance
Accessories Feed/Drain water hose, connection hose assembly, scale remover, pretreatment cartridge, ion-exchange resin cartridge

Power plug is not provided.
* 1 External dimensions excluding protrusions

System Diagram

1.Easy-to-use tray for product water intake (with drainage) 2.Multifunctional control and display panel

* The tray for product water intake place is equipped with original drainage system, which has eliminated the concerns about the discharge of overflowing water.

* Operation status are displayed and the language can be chose either Japanese or English.
* The panel tells you when to replace each filter, which is required to maintain the quality of pure water, by either showing prompts in the display panel(for Model WG250/1000)or illuminating an indicator lamp(for Model WG203).

3.Install anywhere 4.Easy maintenance

* Feed/drain water connectors can be selected from both sides, ready to be installed anywhere. With a rear, flat casing panel the system can be positioned against the wall, leaving no dead space.

* Most consumable parts, including the pretreatment cartridge and the ion-exchange resin cartridge, can be easily attached and detached, facilitating maintenance work.
5.A high-quality ion-exchange resin cartridge (CPC-S) is used. 6.WG250 color selections
* Ion-exchange resin is 25% larger than conventional systems.
* Added activated carbon to the high-quality ion-exchange resin significantly reduces the TOC concentration.
(Investigated at Yamato Scientific Central Laboratory with the tap water of Kanagawa Prefecture, Japan, as raw water)
* Model WG250W (white for both control panel and tray)
* Model WG250B (blue for both control panel and tray)
・Designate color when ordering.

Water quality standard Japan Industrial Standard (JIS) K0557
Description Measurements
K0557 A4
WG203 WG250 WG1000
0.1 or less 0.0055 0.081 0.0055 0.081 0.0056 0.07
Total organic
(TOC)(µg C/L)
50 or less 4 33 4 33 10 20
(µg Zn/L)
0.1 or less <0.01 <0.01 <0.01 <0.01 <0.01 <0.01
(µg SiO2/L)
2.5 or less <1.0 <1.0 <1.0 <1.0 <1.0 <1.0
Chloride ion
(µg Cl-/L)
1 or less <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
Sulfide ion
(µg SO42-/L)
1 or less <0.1 <0.1 <0.1 <0.1 <0.1 <0.1
Total level   A4 A4 A4 A4 A4 A4

Raw water: Tap water of Kanagawa Prefecture, Japan Above measurements vary, depending on the quality of raw water.

Optional accessories and consumables
Remark Description Option Model Main Unit
Model No.
Item Code
  Cart AS250 WG203/WG250 253174
  Product water intake hose unit with a 0.1 μm membrane filter OWG24 WG203/WG250/WG1000 253204
  Water Supply Unit OWH10 WG203/WG250/WG1000 253686
  Raw water pressure reduction valve OWG42 WG203/WG250/WG1000 253769
UV sterilizing lamp   OWG20 WG250 253202
UV sterilizing lamp   OWG22 WG1000 253203
Connection unit G (WL100+WG Series) G WG203/WG250/WG1000 253668
Drain water trap OWI10 WG203/WG250 253211
Drain water trap OWI20 WG1000 253212
  Pretreatment cartridge PWF-1 WG203/WG250/WG1000 253099
  Ion-exchange resin cartridge CPC-S WG203/WG250/WG1000 253080
  Membrane filter (2 filters/set) MFRL727 WG203/WG250/WG1000 9020010004
  Air vent filter for storage tank AVF-1 WG203/WG250/WG1000 9020020001
  UV sterilizing lamp   OWG28 WG250/WG1000 253773
Note: The item marked "●" in the column of "Remark" shall be ordered together with the main unit.
Pretreatment cartridge (PWF-1)
Membrane filter (MFRL727)
Ion-exchange resin cartridge (CPC-S)
Water Supply Unit (OWH10)
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