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Verification of Wash Water Resistivity Reading

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Dave Jurena

#48405

Verification of Wash Water Resistivity Reading | 14 March, 2007

We are setting up a facility in China and would like to verify the resistivity reading on our Westek wash machine. The only tool we have at this time is a multimeter. The machine reads .570 Mohms and the MM reads around .25 Mohms at a probe distance of 1 inch. Can anyone recommend a method to perform this verification? Has anyone measured with a MM and what were your results?

Thank you, Dave

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Mike Konrad

#48406

Verification of Wash Water Resistivity Reading | 15 March, 2007

Dave,

I would not recommend use of a multi-meter to determine high quality DI water resistivity readings. There are a number of reasons including a multi-meter�s lack of temperature compensation.

We use a Myron-L resistivity meter to accurately determine the resistivity of DI water. Here is a link to the model and source I would recommend:

http://www.myronl.com/PDF/data_sheets/750II_res_ds_02_06.pdf

The manufacturer is Myron-L (link below)

http://www.myronl.com/products/res_monitors.htm

You will need to purchase both a monitor and a test cell.

Mike Konrad Aqueous Technologies www.aqueoustech.com Konrad@aqueoustech.com

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Dave Jurena

#48407

Verification of Wash Water Resistivity Reading | 15 March, 2007

Thanks, Mike.

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