We know that filter paper is a commonly used item in the laboratory. The filter paper has good filterability, loose paper, and strong absorption of liquid. In fact, there are many types of filter paper, including quantitative filter paper and qualitative filter paper. What is the difference between them? Let’s talk about it with everyone.
Quantitative analysis of filter paper Quantitative analysis of filter paper During the manufacturing process, the pulp is treated with hydrochloric acid and hydrofluoric acid and washed with distilled water to remove most of the impurities in the paper fiber, so that the residual ash after ignition is very low, with little impact on the analysis results. For accurate quantitative analysis. The current domestic production of quantitative analysis of filter paper, divided into three types of fast, medium and slow, in the filter box with leucorrhea (fast), blue band (medium speed), red band (slow) as a sign of classification. The shape of the filter paper has two kinds of circles and squares. The specifications of the circular fixed paper are divided into several kinds according to the diameter: d225px, dllcm, d312.5px, d375px and d450px. Square quantitative filter paper has 1500px x 1500px and 750px x 750px.
Qualitative analysis Filter paper Qualitative analysis The filter paper generally has more residual ash. It is only used for general qualitative analysis and is used to filter precipitates or suspended in solution. It cannot be used for quality analysis. Qualitative analysis of filter paper types and specifications is basically the same as quantitative analysis of filter paper, indicating fast, medium, and slow speeds, but printing on fast, medium, and slow speeds.
Shijiazhuang Standard Chemicals Co.,LTD specializes in the production and export of filter paper, we will give you high quality products and excellent service. Welcome customers to negotiate.
Post time: Mar-16-2017