Qualitative Filter Paper Laboratoryqualitative Filtration Filter Paper Excellent Quality Good Filtration Performance18cm

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Qualitative analysis of filter paper

Generally, there is a large amount of ash in the filter paper for qualitative analysis. It is only used for general qualitative analysis and filtration of precipitation or suspended matter in solution. It cannot be used for quality analysis.

The types and specifications of qualitative analysis filter paper are basically the same as that of quantitative analysis filter paper, which means fast, medium and slow speed, but printed with the words fast, medium and slow speed.However, when using quantitative and qualitative analysis of filter paper to filter precipitation on the box containing filter paper, attention should be paid:

(1) the general use of natural filtration, the use of filter paper and the ability to retain solid particles, so that the liquid and solid separation;

(2) Due to the mechanical strength and toughness of the filter paper are poor, as far as possible with the method of filtering, such as must speed up the filtering speed, in order to prevent filtering failure, in the air pump filtering, according to the size of the pumping force in the funnel stacked 2 ~ 3 layers of filter paper, in the use of vacuum filtering, in the leakage.First pad a layer of dense filter cloth, then put filter paper filtration;

The filter paper had better not filter hot concentrated sulfuric acid or nitric acid solution.