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Water As A Solvent

Water is a remarkable substance when used as a cleaning agent sue to its solvent ability. Most substances will dissolve a little bit to completely in many instances. For instance based on water temperature several teaspoons of sucrose or sodium chloride will dissolve in a 250 ml beaker when using deionized water. In fact organic compounds that appear insoluble in water can be found dissolved in trace amounts in most water samples.

Notably there is a difference in using ultrapure water as a cleanser and as a solvent. In the latter the ultrapure water acts as an agent from bringing together different substances. At least one of these is a solution in order to facilitate a chemical reaction. Unless it is ionized in an aqueous solution sodium chloride and silver nitrate would have no reaction between them.In a solution the form the insoluble precipitate silver chloride. This also forms the soluble ionized sodium nitrate. One common solvent based process is electroplating. It is the result of the deposition of one substance on another in the form of a thin film. A good example of this would be chromium plating.

In this process the item being plated is immersed in a water solution of sulfuric and chromic acids made up of deionized water with an electrode attached to to the item. As a current goes through the solution the chromium migrates to the the item and becomes deposited on it. Once the process has been running for some time a trivalent chromium contaminant forms. This trivalent chromium contaminant requires a gradual increase in plating current density in order to sustain the rate of deposition. Eventually the current demand reaches a point in which the plating solution must be discarded or purified. To purify this water it must be diluted with deionized water to less than 100 g/l and then pass through a cation exchange chamber. This removes metallic ions. This also leaves pure chromic acid that is ready to be reused. To remove distracting water spots the plated parts are then rinsed in deionized water.


Even though film is used less and less the solvent and deionizing properties of water are used when processing color film. The chemicals used are prepared in deionized water. As the film development process is done the film is rinsed in deionized water throughout the process and at the end of the process. This results in sharper images and truer colors.

Primer : Water Use In Industry


  • Water as a Raw Material
  • Water As A Cooling Agent
  • Water As A Heating Agent
  • Water As A Cleaning Agent
  • Water As A Solvent
  • Water As A Transport Mechanism

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    Lab Water Deionizer




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    APS Polaris XL 4 Lab Water System
    APS Polaris XL 4 Lab Water System


    TAKING PRE-ORDERS
    Short lead Time. 


    This high capacity four housing lab water system is designed to provide up to 3 l.p.m. of ultrapure water exceeding ASTM and CAP Type I, II or III specifications.

    See all Polaris Systems Here

    PROUDLY MADE IN THE USA


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    APS Polaris D2 Water System with Quality Meter

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    Operating Manual

    See all Polaris Systems Here


    PROUDLY MADE IN THE USA

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    APS Polaris D3 Water System with Quality Meter
    APS Polaris D3 Water System with Quality Meter

    This high capacity triple housing is designed to provide 1 g.p.m. of ultrapure water exceeding ASTM and CAP Type II specifications.  

    Operating Manual

    See all Polaris Systems Here


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    APS Polaris D1 Water System with Quality Meter
    APS Polaris D1 Water System with Quality Meter

    This compact single housing is designed to provide 1 g.p.m. of ultrapure water exceeding ASTM and CAP Type II specifications.  

    Comparable to Barnstead D4511

    See all Polaris Systems Here


    PROUDLY MADE IN THE USA

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    Operating Manual

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