12 Different Usages of Filter Paper

Filter paper is a type of paper that is used to filter out impurities from liquids and gases, which is an essential part of many filtration systems. It is made from a variety of materials, including cotton, cellulose, and synthetic fibers. Filter paper is available in a variety of sizes and shapes, including sheets, rolls, and discs. The size and shape of the filter paper will depend on the application it is being used for.

There is a variety of applications available, including water filtration, air filtration, and chemical filtration. In water filtration, filter paper is used to remove impurities from drinking water. In air filtration, filter paper is used to remove dust, pollen, and other airborne particles from the air. In chemical filtration, filter paper is used to remove chemicals from liquids and gases. Hawach provides Qualitative 20 Micron Filter Paper Grade: BIO-4, Quantitative Laboratory Filter Paper Grade: BIO-42, Quantitative Cellulose Filter Paper Grade: BIO-44, Wet Strengthened 10 Micron Filter Paper Grade: BIO-91, and other filter papers for your experiment choice.


Today, HAWACH will introduce 12 different uses of filter paper.

1. After the atomic absorption burner is used for a long time, there will be carbon accumulation. Generally speaking, if not too serious, we will choose filter paper for cleaning. If it is too difficult to clean up, we will use a knife to gently scrape clean the carbon accumulation.
2. When using pH timing, we must keep rinsing the glass electrode with deionized water at the interval of using process, but there will be deionized water on the electrode after rinsing, if put into the sample to be measured directly, it will interfere with the pH value of the sample to be measured, so we can use filter paper to gently suck the water on the electrode dry every time. But remember, don’t touch the glass ball in the middle too often.
3. The carbon tetrachloride used in the oil analysis project needs to be adsorbed by activated carbon before use, but carbon tetrachloride is particularly volatile, sometimes it can evaporate a fifth of a bottle within 20 minutes, and the adsorption column does not have a matching cap. At this time, we can use filter paper over the top of the adsorption column and fix it with a rubber band. Usually, we can use three filter papers to seal it and the effect is good with small carbon tetrachloride volatilization.
4. With the beaker mouth masked with a number of small holes in the filter paper, a dehumidifier is produced.
5. The most important property of filter paper is that it is very absorbent, so sometimes it is used to absorb excess reagents in burettes or separatory funnels, or for other analytical projects.
6. Remove the cuvette excess reagent.
7. Use filter paper to compare titration colors when doing titrations.
8. When we test the sugar-coated tablets which need to peel off the sugar coating, we can wet the sugar coating layer with water and then rub off the sugar coating, and then use filter paper to absorb the water outside, and finally put it into the desiccator to dry.
9. When drying some reagents that do not need to be weighed, placing filter paper underneath can be better dry. But it should be noted that the filter paper will become discolored and brittle if the drying is finished.
10. Filter paper can be used as a carrier of biological indicators. This can be used as an indicator for autoclaving for general laboratory use.
11. When doing fat, it can also be used. Put the folded filter paper inside the Soxhlet extractor.
12. When doing liquid phase samples to be filtered, we generally use the filter head. If there is no filter head temporarily, and to need to filter, we can squeeze the filter paper into a small ball and stuff it inside the syringe, which is also a good simple, and cheap filtering device.