FILTER PAPERS
Quantitative Filter Paper
The quantitative filter papers or ashless filter papers are made with 100% high quality cotton linters fibers which go through a severe chemical process. They have been washed out with a specific acid treatment and finally cleaned from impurities with demineralized water. This process allows to reach an ash content of 0.01%. These papers are used to count during demanding analysis. Available in sheets, plain discs or folded discs. Color code for filtration speed, lot numbers.
Qualitative Filter Paper
Qualitative filter papers 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. Available in sheets, plain discs or folded discs. Color code for filtration speed, lot numbers.
Standard Filter Paper
The standard filter papers for general use 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. Available in sheets, plain discs or folded discs. Color code for filtration speed, lot numbers.
Filter papers
Product number shows: filter type ( quantitative filters, qualitative filters, standard filters), filter grade, package type (disc, sheet, folded disc), filter diameter or dimension and package quantity
Color code indicated on most of filter papers grade symbolize filtration speed: black ( fast filtration), white (medium filtration), blue (slow filtration), green (medium slow filtration), red (very slow filtration)…
Each filter papers package has lot number indicated on the external side of package. Lot number confirm that filter pass quality control procedures throughout the manufacturing proces.
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