The Factors Influencing the Quality of Extraction Thimbles
Nowadays, cellulose extraction thimbles and glass fiber extraction thimbles are widely applied in Soxhlet extractors. Generally, this is a kind of safe, convenient, and effective method for extracting solid and semisolid matters. On the other hand, Soxhlet extractors are extremely effective for inflammable and poisonous solutions and solutions that are easy to give off a smell.
If multiple extraction cycles are required to dissolve the desired compound, using extraction thimbles is the best choice in Soxhlet extractors or automized extractors. Equipped with Hawach extraction thimbles, the extraction units can save lots of handling time and always make the extraction complete.
With efficient and innovative technology, Hawach cellulose extraction thimbles are made of noble cellulose fibers and cotton linters. The cotton linters we use are free from impurities totally. Its consistently high porosity ensures fast flow through. Its high fitting accuracy can be for all available extraction systems. And the max using temperature is 100 ºC. Cellulose extraction thimbles are made up of cellulose cotton wool. They have the advantages of high purity, strong mechanical strength, and intensive retention force. The standard wall thickness of the cellulose extraction thimble is about 1 mm, with a grain retention rate of 10 μm.
Moreover, the wall thickness of thickened cellulose extraction thimble is about 2 mm with a grain retention rate of 6 μm. Normally, the thickened cellulose extraction thimbles are used for special requirements, including high retention force, wet strength increasing, or dry strength increase.
Besides cellulose extraction thimbles, Hawach glass fiber extraction thimbles are made of high-purity borosilicate glass fibers. When the compatibility of cellulose cartridges cannot meet the requirements of the application, a glass fiber extraction thimble is the one you need. Widely used in the analysis of air and waste gas to collect solid particles, they can be used at temperatures above 120ºC.Glass fiber extraction thimbles are made up of 100% pure boron silicate glass fiber. They are suitable for special requirements as well. In general, there are no adhesion agents or annexing agents in glass fiber extraction thimbles.
With the lines of perfect products, Hawach extraction thimble is appreciated by professional analytical chemists all around the world for the purity and consistent high quality.
As we know the glass fiber extraction thimbles perform well in Soxhlet Extraction and other filtration. Glass fiber is a kind of chemical fiber with excellent performance. The key factors affecting the quality of the glass fiber are the melting of the glass, the drawing process and the temperature and speed of the flame.
Three kinds of glass fiber
The production methods are roughly divided into two categories: one is to make the molten glass directly into fiber; the other is to make the molten glass into a glass ball or glass rod with a diameter of 20mm, and then It is remelted in a variety of ways to produce very fine fibers with a diameter of 3-80 μm.
The long fiber is drawn by a mechanical drawing method with a platinum alloy plate. Non-continuous fibers made by rolls or air streams, called fixed-length glass fibers, are commonly referred to as short fibers. The glass fiber filaments are secondarily melted and then sprayed with a high-temperature high-speed flame to obtain fine fibers having a diameter of 0.1 to 3 μm under the action of drawing and dispersing force. Fine, short, flocculent fibers made by centrifugal force or high-speed airflow, called ultra-fine glass fibers.