Manufacturers and Suppliers of Chemicals, Reagent Ltd

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Conductivity Standards

We list two ranges of Conductivity Standards in our online catalogue - standard values and premium values - in 500ml and 2.5L pack sizes. However, if you require solutions in different pack sizes or concentrations please:

Standard Values are available in the following concentrations:

* Conductivity Standard 84 Microsiemens/cm @ 25°C
* Conductivity Standard 147 Microsiemens/cm @ 25°C
* Conductivity Standard 1413 Microsiemens/cm @ 25°C
* Conductivity Standard 12880 Microsiemens/cm @ 25°C

Premium Values are available in the following concentrations:

* Conductivity Standard 10 Microsiemens/cm @ 25°C
* Conductivity Standard 20 Microsiemens/cm @ 25°C
* Conductivity Standard 25 Microsiemens/cm @ 25°C
* Conductivity Standard 30 Microsiemens/cm @ 25°C
* Conductivity Standard 50 Microsiemens/cm @ 25°C
* Conductivity Standard 70 Microsiemens/cm @ 25°C
* Conductivity Standard 85 Microsiemens/cm @ 25°C
* Conductivity Standard 90 Microsiemens/cm @ 25°C
* Conductivity Standard 100 Microsiemens/cm @ 25°C
* Conductivity Standard 150 Microsiemens/cm @ 25°C
* Conductivity Standard 200 Microsiemens/cm @ 25°C
* Conductivity Standard 350 Microsiemens/cm @ 25°C
* Conductivity Standard 400 Microsiemens/cm @ 25°C
* Conductivity Standard 500 Microsiemens/cm @ 25°C
* Conductivity Standard 650 Microsiemens/cm @ 25°C
* Conductivity Standard 718 Microsiemens/cm @ 25°C
* Conductivity Standard 720 Microsiemens/cm @ 25°C
* Conductivity Standard 830 Microsiemens/cm @ 25°C
* Conductivity Standard 850 Microsiemens/cm @ 25°C
* Conductivity Standard 900 Microsiemens/cm @ 25°C
* Conductivity Standard 950 Microsiemens/cm @ 25°C
* Conductivity Standard 1000 Microsiemens/cm @ 25°C
* Conductivity Standard 1150 Microsiemens/cm @ 25°C
* Conductivity Standard 1200 Microsiemens/cm @ 25°C
* Conductivity Standard 1250 Microsiemens/cm @ 25°C
* Conductivity Standard 1420 Microsiemens/cm @ 25°C
* Conductivity Standard 1500 Microsiemens/cm @ 25°C
* Conductivity Standard 1900 Microsiemens/cm @ 25°C
* Conductivity Standard 2000 Microsiemens/cm @ 25°C
* Conductivity Standard 2500 Microsiemens/cm @ 25°C
* Conductivity Standard 2765 Microsiemens/cm @ 25°C
* Conductivity Standard 3000 Microsiemens/cm @ 25°C
* Conductivity Standard 4000 Microsiemens/cm @ 25°C
* Conductivity Standard 5000 Microsiemens/cm @ 25°C
* Conductivity Standard 7500 Microsiemens/cm @ 25°C
* Conductivity Standard 10000 Microsiemens/cm @ 25°C
* Conductivity Standard 15000 Microsiemens/cm @ 25°C
* Conductivity Standard 20000 Microsiemens/cm @ 25°C
* Conductivity Standard 25000 Microsiemens/cm @ 25°C
* Conductivity Standard 30000 Microsiemens/cm @ 25°C
* Conductivity Standard 35000 Microsiemens/cm @ 25°C
* Conductivity Standard 40000 Microsiemens/cm @ 25°C
* Conductivity Standard 90000 Microsiemens/cm @ 25°C
* Conductivity Standard 100000 Microsiemens/cm @ 25°C
* Conductivity Standard 150000 Microsiemens/cm @ 25°C

Conductivity Standards from ReAgent are accurately standardized and labelled with the determined value. They are traceable to N.I.S.T. standard reference materials. Our solutions are supplied in HDPE (High Density Polyethylene) bottles and are commonly used for calibrating conductivity meters. The solutions are clear and colorless in appearance.

Conductivity Standards are used to measure impurities in water. This is done by passing an electrical current through water, the strength of which determines the level of impurities. Water with high levels of impurities will conduct a stronger current than water with very low impurity levels. Conductivity readings are given in siemens per cm or microsiemens per cm. Microsiemens are one millionth the strength of siemens. Whilst conductivity is measured in siemens, at the opposite end of the scale, resistance is measured in ohms. Outside of the chemical industry, more people are familiar with measuring ohms than siemens.

Water without any impurities whatsoever will have a conductivity reading of zero. However in practice under regular conditions, this is unachievable because once water is exposed to the atmosphere (like when a lid is removed from a container) the water will instantly start to absorb matter from the air. Don’t let this mislead you though – we supply water which can be used for pharmaceutical applications which has a conductivity reading of below 5.1 microsiemens per cm, and is often well below this. Although technically there are some dissolved solids in the water, this only accounts for about 3 parts in every million!