ultrapure water Articles

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UltraPure water: systems for microelectronics

by Membrana  (Jun. 1, 2006)

The burgeoning electronics industry Electronics are the heartbeat of the products and services of many industries – including aerospace, communications, entertainment, defence, and health – and, as a consequence, the global electronics market is valued at US$1 trillion worldwide. ...

Challenging Engineering Design and Ultra Pure Fabrication for the Semi-Conductor Industry

by Fabricated Plastics Limited  (Aug. 30, 2012)

Challenging Engineering Design and Ultra Pure Fabrication for the Semi-Conductor Industry The semi-conductor industry is one of the most demanding in terms of its requirements from suppliers. Only a few companies worldwide have the expertise, the facilities, the knowledge and the experience to be considered when new plant equipment is put out for ...

Conductivity Measurement in high purity water samples below 10 microsiems/cm

by IC Controls  (Jan. 1, 2012)

High Purity Water Resistivity/ Conductivity Measurement Ultra-Pure Water without any chemical impurities will still have a conductivity because of the presence of H* and OH" ions due to the self-ionization of water. Ultra-pure water has a conductivity of 0.055 HSiemens'cm or a resistivity of 18.18 mQ-cm at 25 °C. In order to know the ...

Pure water pH measurement in low conductivity samples

by IC Controls  (Jan. 1, 2009)

Normally, pH measurements are made in water with 1,000 to 10,000 uS/cm conductivity. The conductivity conies from dissolved solids, typically, salts plus net acid or base which explains the exhibited pH. These dissolved substances are in the solution in ion form, which makes such solutions conducting. With 1,000 uS/cm conductivity of mobile ions ...

A Case for Point-of-Use RO Ultrapure Water Systems

by GE Water & Process Technologies  (Jan. 1, 2000)

ULTRAPURE WATER CRITERIA - AN OVERVIEW 'Pure water' is a relative term. Practically speaking, no water, naturally occurring or treated by man, consists solely of H2O molecules. Forever in pursuit of achieving equilibrium with its surroundings, water has unique characteristics that result in its ability to dissolve most matter. This property of ...

VSEP treats well and surface water to provide ultra clean drinking water

by New Logic Research, Inc.  (May 31, 2007)

New Logic Research manufactures a proprietary vibrating membrane filtration system that is uniquely suited for treatment of commercial and domestic drinking water. The use of a vibrating membrane mechanism to avoid membrane fouling is new and is just the kind of improvement needed to make the use of membrane filtration an effective and economical ...

AU optronics uses aqueduct maps to assess water risk

by World Resources Institute WRI  (Aug. 27, 2012)

This post is part of a series on World Water Week, an annual event designed to draw attention to and discuss global water issues. Read more posts in this series. This piece was co-authored by Keith Liao, Senior Engineer with the AU Optronics Corporate ...

High Purity Boiler Water Production Using Municipal Wastewater at a Combined Cycle Gas-Fired Generating Station

by Eco-Tec Inc.  (Mar. 24, 2014)

Abstract The recovery of wastewater for industrial uses presents many challenges for the design and operation of water treatment equipment. Since the term wastewater can be applied to a wide range of water sources from municipal sewage to storm runoff to industrial discharge water, the water characteristics may have great variability. As such, the ...

Quantitative structure property relationships for the adsorption of pharmaceuticals onto activated carbon

by IWA Publishing  (Nov. 1, 2010)

Isotherms were determined for the adsorption of five pharmaceutical residues, primidone, carbamazepine, ibuprofen, naproxen and diclofenac, to Calgon Filtrasorb 300 powdered activated carbon (PAC). The sorption behavior was examined in ultra-pure and wastewater effluent organic matter (EfOM) matrices, where more sorption was observed in the ...

Electrodeionization - Ultrapure water

by SIMPEC Srl Societa Implanti Ecologici  (Sep. 29, 2011)

Continuous Electrodeionization Process The continuous electrodeionization process (CEDI),  is a system that uses ion exchange resins and electricity  for the production of ultrapure deionized water without chemical processes and without production stops. SIMPEC uses modular systems for the electrodeionization processes. The CEDI modules ...

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