Because of the particularity of standard standards, there are special requirements for samples. Due to the lack of standards, many users have great discrepancies in data. Here I provide several aspects that should be paid attention to in product sampling:
1. The selection of sampling line, because it is easy to use, many traditional sampling lines use this kind of line, but it is well known that the tube is very adsorptive to most organic and sulfur-containing materials, and its permeability is also very strong, so it is not advisable to use all kinds of control lines, resulting in a great deviation in the analytical data. It is recommended that the internal quartz should be used for sulfur standards and products according to the use of tubes, tubes, and tetrafluorotubes.
2. for the setting of quality, as the preparation must go through the generator and tube before the sample can be taken, in order to sample correctly, it is necessary to make a full setting of the generator and the pipe line. This kind of setting is not a simple meaning. Because of the heavy load of the machine, open the bottle and turn it back on more than 3 times, each time to drain the battery in the machine, and then blow the system before you can take the sample correctly.
3. The confidentiality of the sample control line and the leakage of the sample control line have a great impact on the accuracy of the data of the products, especially on the low oxygen concentration. So be sure to check the confidentiality of the sampling line.
4. It is * not advisable to take the standard standard from the bottle into the pickup bag or other container and then take samples from the container for analysis, which causes secondary pollution. So that the data of quality products can not be really shown.
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