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Feb 24, 2016 · Since acidity and alkalinity have a large effect on the electrical conductivity, it is necessary to neutralize the sample of boiler water before measuring its conductivity. The procedure is as follows: Add a few drops of phenolphthalein indicator solution to the cooled sample (< 25°C). If the sample is alkaline, a strong purple color is obtained.Get A Quote
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Nov 01, 2006 · Extend the water sample nozzle into the pipe a distance 0.23 times the internal radius of the pipe, up to a maximum of 2 inches. The nozzle should be cut at a 45° angle and should face into the direction of flow (see Figure 1). A Pitot tube is an acceptable equivalent. Keep sample lines as short as possible, ideally less than 30 feet.Get A Quote
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