Selecting a Glass Fiber Filter on Amazon.com
A glass fiber filter can be used in a wide variety of laboratory filtration applications, including clarification of aqueous solutions and analysis of suspended solids. Typically made of borosilicate glass or quartz fibers to withstand high temperatures, glass fiber filter paper retains fine particles between 0.7 and 2.7μm in size. Some filters are made with a binder resin for added mechanical strength, but filters without binder resin are chemically inert and will not react with other chemicals during filtration. Glass fiber filters come in thicknesses that can range from 260 to 750μm. A glass fiber filter may be disc-shaped, funnel-shaped, or available as a rectangular sheet. Glass fiber filters are commonly used in biological research laboratories for filtration of protein solutions and bacterial cultures, liquid scintillation counting, and cell harvesting. They are also used in industrial environments to monitor air and water pollution and in some beer-making filtration processes.