ultrapure water Articles | Environmental XPRT

Meeting water quality specifications for 300 mm processing

Abstract This paper reviews the historical ultrapure water specifications and compares them to the specifications for state of the art 300 mm manufacturing. As the design rule has evolved to 0.13 μm, the ultrapure water specifications have made similar evolutions. This paper discusses these evolutions and focuses on the state of the art technologies that are available to meet these ...

Mar. 28, 2001

By 3M Membrane Filtration (formerly Membrana)

Statistics of Particle Counting in Ultrapure Water

Abstract State of the art ultrapure water systems are now so clean that quantifying the particle concentrations is difficult. When measuring the cleanliness of the water the scarcity of particles can lead to statistical variations that can be as large or larger than the actual particle concentrations. A thorough understanding of the statistics of particle counting is needed to mitigate these ...

May 18, 2019

By Particle Measuring Systems

Ultrapure Water: World Markets Report

Provides continually updated analyses and forecasts of ultrapure water systems and a number of specific components and consumables such as resins for power, pharmaceutical, semiconductor, and other industries. Click here for ...

Jun. 8, 2010

By The McIlvaine Company

pH of Pure and Ultrapure Water

Measuring pH properly in pure and ultrapure water is difficult. pH is critical for process control and for preventing corrosion for example. pH of Ultrapure Water pH of Ultrapure water is 7.00. The only ions present are H+ and OH-, and since these must be in balance, the pH is 7. Don’t try to measure the pH of Ultrapure Water! If you are above 16 Megohm, pH is between 6.95 and 7.05. pH ...

May 30, 2019

By SnowPure Water Technologies

Ultrapure water – The standard for resistivity measurements of Ultrapure water - Case Study

Abstract For years, resistivity/conductivity2 instrumentation has been used as a reliable indicator of ionic water quality, especially for ultrapure water (UPW). Traditionally, the instrumentation is procured, installed, powered up, and perhaps connected to a PLC, strip chart recorder, or a LAN. After that, the instrument and sensor receive no attention until a problem arises. Today, continuous ...

Mar. 2, 1998

By SnowPure Water Technologies

UltraPure water: systems for microelectronics

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. The electronics market is a stage for intense competition, primarily among US and Asian firms. This in turn spurs ...

Jun. 1, 2006

By 3M Membrane Filtration (formerly Membrana)

Rehabilitation and upgrade of process water treatment plant - Project

MEGA has supplied High Purity Water Treatment EDI units as a part of novel membrane-only water treatment solution. The facility in the company ENERGY at Ústí nad Labem, Czech Republic, needed an update after tens of years of heavy duty. Ultrafiltration, reverse osmosis and EDI units were selected to process river water into ultrapure water. MPure™ EDI by MEGA has proven to be ...

Aug. 25, 2020

By MEGA a.s.

Ultrapure Water Clean Semiconductor Components, Not Safe to Drink

Ultrapure water is used to clean semiconductors and make microchips. This level of pure water would suck vital minerals right out of your body. Plus it tastes really flat. Water too pure to drink? Every day, around the world, tens of millions of gallons of the cleanest water possible are created, water so clean that it is regarded as an industrial solvent, absolutely central to high-tech ...

Dec. 17, 2017

By SnowPure Water Technologies

Ultrapure Water - The Standard for Resistivity Measurements of Ultrapure Water

Abstract For years, resistivity, conductivity^ instrumentation has been used as a reliable indicator of ionic water quality, especially for ultrapure water (UPW). Traditionally, the instrumentation is procured, installed, powered up, and perhaps connected to a PLC, strip chart recorder, or a LAN. After that, the instrument and sensor receive no attention until a problem arises. Today, continuous ...

Mar. 2, 1998

By SnowPure Water Technologies

Electrodeionization - Ultrapure water

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 are installed at the exit of permeate coming from reverse ...

Sep. 29, 2011

By SIMPEC S.r.l.

Electrodeionization is a Continuous Process

Unlike mixed bed DI, electrodeionization (EDI) is continuous. Because electrodeionization is continuous there are no spikes in quality as when mixed beds are changed for batch regeneration. An additional benefit for EDI users is that there is no concern about the timing of changing batches, or planning for the eventual breakthrough of ions in the bed like silica, sodium, or general conductivity. ...

May 13, 2018

By SnowPure Water Technologies

River water is filtered for use in an electronic disk manufacturing facility in Hokkaido, Japan

New Logic International installed its Vibratory Shear Enhanced Processing (VSEP) Phase I system in July, 1997, and the Phase II system in August 1998 at a major international electronic disk manufacturing facility at Hokkaido Island located in Northern Japan. The VSEP is used for treatment of river water for ultrapure water production at this facility. The VSEP system uses an ultrafiltration ...

May 31, 2007

By New Logic Research, Inc.

Electrodeionización Para Generación de Energía y Farmacéutica

In México, EDI (Electrodeionización) is used to produce pure and ultrapure water for both Generación de Energía y Farmacéutica (USP PW y WFI). The challenge for pure and ultrapure water in Mexico is the silica level. SnowPure works in México with OEMs to choose technologies and processes that will enable good performance and long life for RO (OI) and EDI ...

Jun. 1, 2019

By SnowPure Water Technologies

Ultrapure Water for Determination of Toxic Elements in Environmental Analyses

Abstract In this paper the importance of reagent water quality for toxic element environmental analyses is discussed, and the suitability of fresh ultrapure water produced using Merck water purification systems for ICP-OES and ICP-MS trace element analyses in environmental laboratories is demonstrated. Key words or phrases Trace elements, metals, toxic elements, ICP-MS, ICP-OES, contamination, ...

Apr. 10, 2018

By Merck KGaA, Darmstadt, Germany

Water, Wastewater, and Filtration: World Markets Report

Forecasts of the $183 billion market for water and wastewater treatment and filtration products and services including outsourcing. Also included are world forecasts for chemicals, cartridges, macro filtration, membranes, sedimentation, centrifugation, and ultrapure water ...

Jun. 8, 2010

By The McIlvaine Company

Removal of bromide and bromate from drinking water using granular activated carbon

Granular activated carbon (GAC) was used to remove bromide (Br−) and bromate (BrO3−) from drinking water in both bench- and pilot-scale experiments. The present study aims to minimize BrO3− formation and eliminate BrO3− generated during the ozonation of drinking water, particularly in packaged drinking water. Results show that the Br− and BrO3− levels ...

Feb. 27, 2015

By IWA Publishing

Application of laser-induced breakdown-detection as a sensitive detector for UF membrane surrogate challenge tests

Characteristics of ultrafiltration membranes with respect to the removal of nanoscale particles can be determined by surrogate challenge tests (SCTs). Key elements of a successful SCT are the selection of a suitable surrogate and a reliable quantification method. A major challenge when using nanoparticles as surrogates is their quantification in the filtrate, since commonly used particle ...

Apr. 8, 2015

By IWA Publishing

Getting the bugs out of electronic devices - Case Study

UV light quickly and effectively destroys Ozone. atg UV Technology worked with Ozonetech to develop a bespoke and compact ozone destruction system to keep their customers process sterile. The purest water in the world is not, as you might think, rain but the ultrapure water used in the manufacture of silicon semiconductor devices. The reason is quite simple: the spacing of circuit ...

Jul. 2, 2019

By atg UV Technology

Instrumentation and Operational Considerations for On-Line pH Measurement in Samples Below 10µS/cm Conductivity

Ordinarily pH measurements are made in water with 1,000 to 10,000 µS/cm conductivity. The conductivity comes from dissolved solids which are typically salts but also acid or base. These dissolved substances are in the solution in ion form which makes such solutions conducting. With conductivities of 1,000 µS/ cm or more, an ample supply of mobile ions provides pH electrodes with a ...

Oct. 5, 2016

By IC Controls Ltd.

A Guide to help you understand Electrodeionization Technology

Ultrapure water is essential for advanced manufacturing plants, for example: pharmaceuticals, energy production, and microelectronic industries. Many end users now seek water treatment technologies with lower pollution loads and elimination of regeneration ...

Oct. 14, 2020

By Agape Water Solutions, Inc.

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