Duo™ Two-In-One Water Purification System | Deionized & Ultrapure Water

Features & Benefits:

  • Fast variable dispenses with ultrapure water - up to 2 liters per minute.
  • Quick-change consumables with a realistic cost.
  • Novel recirculation loop extends the life of membranes and cartridges.
  • Easy to use software.
  • Dual wavelength 185nm and 254nm UV in a quartz thimble.
  • Bench, wall or reservoir top mounting.
  • Choice of production rates.
  • Choice of storage reservoir:  30, 60 or 100 liters.
  • Comprehensive monitoring of water quality including TOC (Total Organic Carbon).
  • Integral boost pump.
  • Space savings design with 2 water qualities in one unit.
Availability: In stock

The Duo(TM) water purification system is a complete pre-engineered system designed to provide Type 2 water that can be dispensed from the storage tank via a dispense tap or provide Type 1 water that can be dispensed from an integral dispenser gun or via a remote dispenser gun.

The innovative and unique Duo provides two water qualities within one easy to use a system. Save on space, initial outlay and consumables costs.   Type 2 water is available from the reservoir while Type 1 water is ready to dispense from the unit or the remote dispenser.

Duo is suitable for Type 2 water use of 10-150 liters per day.  Type 2 water is used for buffer and media productions, sample and reagent diluent, general chemistry, protein electrophoresis, histology, cytology, and spectrophotometry.   Duo is also suitable for Type 1 water use of up to 100 liters per day.  Type 1 water is used for molecular biology, electrophoresis, cell and tissue culture, sequencing, HPLC, genomics, pharmacology and any other sensitive applications. 

TOC monitoring is critical when organics will affect results so a real-time TOC reading will provide absolutely confide in your water quality.

  Duo 10 TOC Duo 10 TOC UF Duo 20 TOC Duo 20 TOC UF
Production (into tank) 10 l/hr 10 l/hr 20 l/hr 20 l/hr
Dispense Rate 2 l/min 2 l/min 2 l/min 2 l/min
Resistivity  18.2MΩ-cm 18.2MΩ-cm 18.2MΩ-cm 18.2MΩ-cm
TOC 1 - 5 ppb 1 - 5 ppb 1 - 5 ppb 1 - 5 ppb
Rnase / DNase   free   free
Endotoxins   <0.001EU/ml   <0.001EU/ml
Feed Water Pressure 1.4 - 87 psi 1.4 - 87 psi 1.4 - 87 psi 1.4 - 87 psi

Duo Tap Water Feed

Type 1 and 2 water from a single system 

Dual system functionality:

-   Laboratory water (Type 2) on demand from reservoir

-   Ultrapure water (Type 1) from dispenser on the system or remote dispenser

- 10 or 20 liters per hour Type 2 water produced into storage reservoir

- Ultra-pure water flow-rate up to 2 liters per minute

- Laboratory water: 1-15 MΩ-cm

- Ultrapure water: 18.2 MΩ-cm water quality

- >50% recovery of RO water

- SD card interface

- Novel recirculation process extends life of RO membrane and DI cartridges

- Minimum 1.45 psi feed pressure required as in-built boost pump deals with low pressure.  External pump is not necessary.

- Continuous TOC monitoring with display

- Up to 98% rejection of inorganics

- Wall mounting bracket included

- On-bench, under-bench, wall or reservoir-top mounting

First set of consumables included

- Easy access to change filters

- Volume controlled dispensing

- Comprehensive and continuous water quality monitoring

- Choice of 30/60/100 liter capacity reservoir               









*To the top of Dispense Gun, height to the top of the Dispense tube curve is 28.74”


Annual Consumables


Duo 10 TOC

Duo 20 TOC

Duo 10 TOC UF

Duo 20 TOC UF

DUO Consumable Kit

7120-4500-250 7120-4500-251







Remote dispense stand


25.19” *














*To the top of Dispense Gun, height to the top of the Dispense tube curve is 26.38”


- Including dispense tap on front of reservoir in the middle or at the bottom

- 3/4” BSP glass-washer outlet

- Pressure sensor level control, with a 0-100% contents display

- 0.2μm microbiological air vent filter or an optional CO2 filter

- 30 and 60 liter reservoirs are wall mountable


Services required

3/4” BSP isolated cold water feed (washing machine tap/valve)

240 Volt, 13 Amp sockets

Drain/up-stand with trap or sink


Installation kit includes:

- 79” drain tube
- 79” feed water tube
- 79” product supply tube
- ¾” BSP adaptor for supply
- Wall mounting brackets
- Instructions for wall mounting
- Manual (USB Stick format) 


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