Seeking recommendations for analytical instruments
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Recently, there is a need for online detection of the moisture content. For the liquid in question, it is toluene, and the detection is to be carried out at a temperature of 70°C and a pressure of 1 bar, with a target value of 500 ppm. Another case involves methanol containing toluene; again, the detection is done at 70°C and 1 bar, but the target value here is 3000 ppm. What instruments are recommended for this purpose?
There are many claims made about such products in the market, but few that are truly effective. You may refer to the following information and make your own decision: 1. Specialized analyzers for detecting trace amounts of water in oil – a company named MODCON offers such products, which can measure trace water in crude oil and petroleum products; the price of these products is not too high. 2. Near-infrared spectroscopy can be used to detect trace water, but the cost of such products is very high. MODCON has an agent in Beijing; you can contact them at bruce.xu@modcon-system.com
Liquid is methanol with toluene detection—are there any other components in it? My WeChat ID is 1664129673
Near-infrared has better performance. Careful consideration of the capacitance method.
For trace amounts of moisture, we use a Mettler moisture meter
We have online detectors for trace water content, as well as near-infrared spectroscopy analysis methods imported from Germany, which can measure the toluene water content within the range of 300 ppm–10%
Due to the large measurement range, capacitive microwater analyzers are not recommended; these analyzers use a relative measurement method, and the higher the water content, the lower the accuracy； It is recommended to use near-infrared methods for measurement.
For issues with the vacuum system of analytical instruments, consult me for free assistance