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Deionized Water Typical Analysis

Synonyms for deionized water include de-ionized water, deionised water, de-ionised water and DI water.

Conductivity <1μs/cm*
pH 5-8
H2O 18.0
Residue on Evaporation <10mg/L
Chloride as Cl <1.0mg/L
Heavy Metals (Pb) <0.1ppm
Nitrate <2ppm
Silica as SiO2 <0.01mg/L


Aluminium <0.05mg/L
Antimony <0.1mg/L
Arsenic <0.1mg/L
Boron <0.05mg/L
Barium <0.01mg/L
Calcium <0.01mg/L
Cadmium <0.01mg/L
Chromium <0.01mg/L
Copper <0.01mg/L
Iron <0.01mg/L
Potassium <0.01mg/L
Magnesium <0.01mg/L
Manganese <0.01mg/L
Molybdenum <0.01mg/L
Sodium <0.02mg/L
Nickel <0.01mg/L
Tin <0.1mg/L
Zinc <0.01mg/L


This specification is a typical analysis of our deionized water when it is produced.  Please be aware that CO2 absorbed from the atmosphere can increase conductivity very slightly.  This is why the vast majority of the water we sell is made to order, ensuring your product is as high quality as possible.


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All products we sell have an official specification.  Specifications are designed to indicate a minimum quality of a product.  There are a number of ways to measure this for our pure water product, one of the most common being conductivity.  Conductivity is the measurement of solutions’ ability to pass an electric current through it.  As our water products are such high quality, many of the impurities have been removed, therefore there will be fewer particles for a current to be passed between.  To put it in simple terms, the lower the conductivity, the higher the quality of the water.

Specifications and typical analysis’ exist so that the customer can determine the suitability of a product for a particular application.  If you require any assistance in determining the suitability of any of our products for your particular application, please get in touch and speak with one of our many technical advisors.  If you prefer, we can be contacted by email on enquiries@the-water-company.com.



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