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Ultrapure water - Wikipedia
Ultrapure water (UPW), high-purity water or highly purified water (HPW) is water that has been purified to uncommonly stringent specifications. Ultrapure water is a term commonly used in manufacturing to emphasize the fact that the water is treated to the highest levels of purity for all contaminant types, including: … See more
UPW system design for semiconductor industry
Typically, city feed-water (containing all the unwanted contaminants previously mentioned) is taken through a series of purification steps that, depending on the desired quality of … See moreStainless steel remains a piping material of choice for the pharmaceutical industry. Due to its metallic contribution, most steel was removed from … See more
Ultrapure water is treated through multiple steps to meet the quality standards for different users.
The primary … See moreOn-line analytical measurements
Conductivity/resistivity
In pure water systems, electrolytic conductivity or … See moreParticles control
Particles in UPW are critical contaminants, which result in numerous forms of defects on wafer surfaces. With the large volume of UPW, which … See moreWikipedia text under CC-BY-SA license Ultrapure Water | The Different Varieties & Their Uses
1 day ago · Ultrapure water (UPW) is water that has been purified to high levels of specification. As a standard, the water contains only H20, as well as balanced number of H+ and OH- ions. It has a resistivity of 18.2 MΩ.cm, TOC < 10 ppb …
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