Deionized Water Systems (Ion Exchange)
Deionized (DI) water is produced by ion exchange technology to remove dissolved ionic contaminants from feed water. It provides low conductivity water for technical laboratory use, equipment protection and as a stable base for further purification to Type 2 or Type 1 water.
- Product: high-capacity mixed-bed ion exchanger for laboratory deionized water
- Feed: tap water / potable water
- Flow rate: up to 2400 L/h
- Capacity: approx. 11000 L at 300 µS/cm feed water
- Water quality: 0.1–20 µS/cm demineralized water
€2.982,00 excl. VAT
- Product: ultra high-capacity mixed-bed ion exchanger for laboratory deionized water
- Feed: tap water / potable water
- Flow rate: up to 2400 L/h
- Capacity: approx. 15000 L at 300 µS/cm feed water
- Water quality: 0.1–20 µS/cm demineralized water
€3.245,00 excl. VAT
- Product: mixed-bed ion exchanger for laboratory deionized water
- Feed: tap water / potable water
- Flow rate: up to 500 L/h
- Capacity: approx. 2500 L at 300 µS/cm feed water
- Water quality: 0.1–20 µS/cm demineralized water
€896,00 excl. VAT
- Product: mixed-bed ion exchanger for laboratory deionized water
- Feed: tap water / potable water
- Flow rate: up to 600 L/h
- Capacity: approx. 2800 L at 300 µS/cm feed water
- Water quality: 0.1–20 µS/cm demineralized water
€1.035,00 excl. VAT
- Product: mixed-bed ion exchanger for laboratory deionized water
- Feed: tap water / potable water
- Flow rate: up to 1000 L/h
- Capacity: approx. 3600 L at 300 µS/cm feed water
- Water quality: 0.1–20 µS/cm demineralized water
€1.324,00 excl. VAT
- Product: mixed-bed ion exchanger for laboratory deionized water
- Feed: tap water / potable water
- Flow rate: up to 1800 L/h
- Capacity: approx. 6000 L at 300 µS/cm feed water
- Water quality: 0.1–20 µS/cm demineralized water
€2.014,00 excl. VAT
- Product: high-capacity mixed-bed ion exchanger for laboratory deionized water
- Feed: tap water / potable water
- Flow rate: up to 2400 L/h
- Capacity: approx. 8400 L at 300 µS/cm feed water
- Water quality: 0.1–20 µS/cm demineralized water
€2.606,00 excl. VAT
Deionized Water vs RO Water vs Type 2 Water
| Water Type | Technology | Main Applications |
|---|---|---|
| Deionized Water (DI) | Ion exchange resins (cation + anion) | Glassware rinsing, autoclaves, humidification |
| Type 3 RO Water | Reverse osmosis membrane | Bulk laboratory water, feed to Type 1/2 |
| Type 2 Pure Water | RO + Deionization / EDI | Reagent preparation, microbiology, general lab analysis |
Key difference: Ion exchange removes dissolved ions directly via resin exchange, while reverse osmosis separates contaminants through a semi-permeable membrane.
What is Deionized Water?
Deionized water is produced using ion exchange resins that remove positively charged ions (such as calcium, magnesium and sodium) and negatively charged ions (such as chloride, sulfate and nitrate). The result is low conductivity water suitable for technical laboratory applications.
How Ion Exchange Works
Cation resins exchange dissolved positive ions for hydrogen (H⁺) ions, while anion resins exchange negative ions for hydroxide (OH⁻) ions. These combine to form pure water (H₂O), significantly reducing total dissolved solids.
Typical Laboratory Applications
- Final glassware rinsing
- Autoclave feed water
- Humidification systems
- Feed water for Type 1 ultrapure systems
- Feed water for Type 2 pure water systems
Deionized Water vs Water Softening
A water softener removes only hardness ions (calcium and magnesium). Deionization removes a broader range of dissolved ionic contaminants, resulting in significantly lower conductivity and improved suitability for laboratory use.
Maintenance and Resin Replacement
Depending on system configuration, ion exchange resins can be regenerated chemically or replaced using exchange cartridges. Laboratories in Belgium, the Netherlands and Luxembourg often choose maintenance agreements to ensure stable and predictable water quality.
Integration into Central Systems
Deionized water production can operate as a standalone solution or be integrated into a central laboratory water system with storage tanks and distribution loops.
Equipment Compatibility
DI water is commonly used to supply laboratory glassware washers (page coming soon) and constant climate chambers to prevent mineral deposits and corrosion.
Professional Laboratory Focus
The systems described here are intended for professional laboratory and technical environments across the BeNeLux region and are not domestic drinking water purification systems.