Filter Paper Introduction
Filter paper is a kind of paper with good filtering performance. It is loose and has strong absorbance to liquid, Hawach Scientific filter paper is made in Clean room, manufactured from high purity alpha-cellulose and cotton liner, material import from Germany, and special design equivalent to Whatman, Pall, Milipall, Advantech and so on, besides, it get CE and ISO 9001 Certificates as well.
There are two types of filter paper, Quantitative and qualitative :
The quantitative filter paper is mainly used for ashing weighing analysis after filtration, that is, gravimetric analysis test and corresponding analysis test in quantitative chemical analysis. The weight of ash after each filter paper is a fixed value, with low ashless < 0.007 %; qualitative filter paper is used in general Filtration, qualitative chemical analysis and corresponding filtration separation, with Low ashless < 0.1%.
Filter Paper Type :
Disc filter paper, filter paper Roll, Square type
Filtration Speed (Pore Size) :
Fast : 20-25um；Medium : 8-10um；Slow : 2.5-3um
Regular Diameter : 70mm, 90mm, 110mm, 125mm, 150mm, 180mm and so on.
We also accept customized size such as 240mm, 300mm, 320mm, 400mm, 600mm, 750mm, OEM Service also is available.