The standard filter papers are made with 100% cellulose and could have various applications in hospital/medical works, in research laboratories, in schools/universities, in chemical, pharmaceutical, cosmetic, water treatment or food industries...
Those grades are made with high purity cotton linters fibres and cellulose fibres (ash content of 0.06%). The qualitative filter papers allow to determinate with great precision the nature of the filtered solutions and to check the composition of the samples. They offer better resistance to chemicals and moisture compared to standard filters and thus can be used for food, beverages, environmental analysis (air, soil ...).
The quantitative or ashless filter papers are made with 100% high quality cotton linter fibres and alpha-cellulose fibres, which go through a severe chemical process. They have been washed out with a specific acid treatment and finally washed from impurities with demineralized water. This process allows reaching an ash content below 0.01%. These papers are used to count during demanding analysis.
Made with 100% borosilicated microglass fibers, these filters offer an excellent level of very small particles retention (up to 0.7 μm) and a large loading capacity. They are particularly suitable for microfiltration of air, gases and liquids as they resist to 500 °C and are compatible to most solvents and reagents (except hydrofluoric acid).
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