|UV Oxidation in Water Purification|
|Water Purification Technologies and Silica Breakthrough|
American Laboratory News April 2002
The presence of silica in ultrapure water has long been recognized as an issue in several areas of research and routine testing. In particular, applications in the microelectronics industry are particularly known for their sensitivity to silica, but instruments such as weatherometers, autoclaves, and clinical analyzers also require silica-free water to avoid instrument defection and erroneous results. Hence, the avoidance of silica in the final purification system should be a basic and primary concern. It is therefore extremely important to have a well-designed pretreatment system to remove the bulk of silica and to avoid silica release. While some pretreatment methods and systems are very efficient in removing silica, others have a low efficacy due to the materials used or to system misuse. The most widely used water purification technologies are deionization (DI), reverse osmosis (RO), and electrodeionization (EDI). Their effect on and pertinence for silica removal are discussed in terms of silica chemistry and behaviour under different conditions in this paper and comparative data is presented for these three purification technologies.
RiOs-DI® systems are designed for laboratories that need a point-of-use system to supply a few liters of pure (Type 2) water per day. With the RiOs-DI® range of water purification systems, you benefit from a compact solution that efficiently combines reverse osmosis technology and deionization resins to produce pure water. For applications sensitive to bacteria contaminants, a UV version of the RiOs-DI® system is also available
Simple handling & maintenance
- Convenient installation anywhere in your laboratory with its compact design: wall-mounted or on the bench.
- Easily insert your pack in one movement with the patented locking mechanism.
- Backlit color display provides just the information required.
- Type 2 water is easily available from the 6L built-in storage tank.
For full confidence in your RiOs-DI® system, it is delivered a Certificate of Conformity ensuring that it has been built and tested fully assembled following internal Standard Operating Procedures. All RiOs-DI® consumables are delivered with their Certificate of Quality. The manufacturing site is ISO® 9001 v.2000 and ISO® 140001 certified.
RiOs-DI® pure water (Type 2)
|Resistivity at 25 °C||10 MΩ•cm|
|Organic rejection for MW > 200 Dalton||> 99 %|
|Particulates rejection||> 99%|
|Production flow Rate at 15 °C +/- 15 %||3 L/h|
|Feed Water Quality||Potable tap water|
|Feed water connection||½” Gaz M|
|Feed water pressure||0.5 - 6 bar|
|Dimensions (H x W x D)||500 x 290 x 330 mm (19.6 x 11.4 x 13.0 in)|
|Operating weight (RiOs-DI® 3)||16.7 kg (36.7 lb)|
|Operating weight (RiOs-DI® 3 UV)||17.3 kg (38.0 lb)|
|Built-in storage tank volume||6 L|
|Electrical power supply voltage||100 - 250 V +/- 10%|
|Electrical power supply frequency||50 - 60 Hz +/- 10%|
The RiOs-DI® system is tested by an independent and accredited company for compliance with the CE directives related to safety and electromagnetic compatibility. The report can be consulted on demand. The RiOs-DI® system is built using components and practices recommended by UL and has been cUL marked. The registration can be verified on the UL web site (http://www.ul.com).