During the processing of grain into a variety of flour products, due to raw material cleaning is not clean or due to mechanical wear and other reasons, resulting in mixed magnetic metal impurities in the finished product, these tiny metal impurities with the food intake into the body, will cause harm to the human body, Affecting physical health, the national standard has strict restrictions on this (the allowable amount is less than 0.003g/kg); at the same time, the level of magnetic metal content is also an important indicator for evaluating powder production and processing technology. Magnetic metal detector is an important instrument for measuring metal impurities in recent years.
In order to facilitate the implementation of the new standard, it is easy for the majority of inspection and inspection personnel to grasp the separation plate separation method as soon as possible and accurately and quickly detect the measurement results. Now we introduce some operating methods and precautions in the testing process as follows so that the operators can quickly Effectively improve the accuracy of test results, while reducing the cost of inspection and labor intensity. The detection of magnetic metals is mainly aimed at wheat flour, rice flour, glutinous rice flour, corn flour, and various grain nutritional powders, etc. Powder samples are not suitable for samples that have been heavily agglomerated for high water content.
Before the test, use a dry gauze or a small brush to completely clean the magnetic metal detector. Turn on the power and check that the instrument is operating normally. Then pour the sample into the sample. Unplug the power after the test and clean the instrument. In order to avoid the loss of magnetic metal during the test process of the magnetic metal material tester, the white paper collected with the mixture of the magnetic metal material and the residual sample must be placed on the magnetic separation area of ​​the separation plate and kept separated.
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