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Deionised (DI) Water Systems

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Pico Special Offer

General Laboratory Grade Water, Type 2

Triple Red manufacture, install, commission, service and maintain a comprehensive range of water purification systems in the Geno range.

Our high-quality water systems are manufactured in the UK to the most demanding standards. Triple Red holds all spare parts and consumables (on our own and other manufacturer's systems) for local delivery. Our local teams of expert water engineers can carry out your routine servicing and maintenance. Complete turnkey packages for installation, commissioning and on-going service are available here.

Arrange your free consultation with one of our expert Life Science Sales Specialist; they can advise the most suitable products based on your application. All installations are handled by a dedicated project coordinator and UK wide team of local engineers to ensure that the process is as efficient as possible and the after-sales support provided by our experienced customer service support team is unrivalled. Whether you require planned preventative maintenance or 24/7cover, it can be provided to fit with the needs of your laboratory.

Type 2 Water and its Applications:

Often referred to as general grade laboratory water. It is produced using reverse osmosis and an additional technology used such as ion exchange or electrical ion exchange (EDI). Type 2 water quality is 1-15meg ohm with low organics. 

Type 2 water is used for:

  • General laboratory applications requiring higher ionic purity
  • Buffer make up
  • Media production
  • Sample dilution and reagent preparation
  • General Chemistry


How does Deionisation (DI) work?

Deionisation is a chemical process which uses specially manufactured ion-exchange resins which exchange hydrogen ion and hydroxide ion for dissolved minerals, which then recombine to form water. Deionised water has typically had its mineral ions removed, such as cations from sodium, calcium, iron, and copper, and anions such as chloride and sulphate.

Laboratory deionisers incorporate mixed bed cartridges of ion exchange resins that are discarded. Deionisation functions by exchanging hydrogen ions for cationic contaminants and hydroxyl ions for anionic contaminants in the feed water. The ion exchange resin beds are made up of tiny spherically shaped bead through which the water passes. After a period of time, cations and anions will have replaced all the hydrogen and hydroxyl in the resins and the cartridges will need to be replaced. 

How does Electrodeionisation (EDI) work?

EDI Diagram

EDI Technology

RO/EDI systems feature an EDI module that consists of ion exchange resins used in single beds for enhanced water purification. Microbiological analysis of product water shows a high decrease in proliferation of bacteria due to the high pH swing between the 2 cells and direct contact of resin and electrodes. Furthermore, an intermediate pH shift has a positive effect on the separation of SiO2 (Silicon Dioxide) and CO2 (Carbon Dioxide). We also see a remarkable reduction in the number of bacteria with high colony forming unit (CFU) counts from the feedwater, as electrodes in the water make it unsuitable for bacteria to live.

EDI’s Clear Advantage Is Continuous Operation

EDI Technology is designed to have the module continually regenerate itself, without any acids or alkalis. This technology is a cost effective way to ensure pure water when you need it and also benefits the environment because of less required consumables. The combination of RO membranes and the EDI module offers minimal downtime which means fewer process interruptions for you.

Read More About Type 2 Water

Water Technology, Service, Consumables and Triple Red DI Water Systems

How does Deionisation work?


Triple Red Water Brochure