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Qualitative filter paper
Apr 27, 2017

Quantitative analysis of filter paper in the manufacturing process, the paper pulp through hydrochloric acid and hydrofluoric acid treatment, and washed by distilled water, and the most impurities in the fiber, so the residue ash is very little, the results of the analysis has little effect, suitable for precision quantitative analysis. At present, the quantitative analysis of the domestic production of filter paper, fast, medium speed, slow three types, in the filter tray respectively with a white band (fast), blue belt (medium speed), red tape (slow) for the logo classification. The shape of the filter paper has a circular and square two, circular sizing according to the diameter of the specifications of d9cm, DLLCM, d12.5cm, d15cm and d18cm number. Square Quantitative filter paper has 60cmx60cm and 30cmx30cm.