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Qualitative filter paper
  • Qualitative filter paper

LabScie® qualitative filter paper are made from cotton pulp or refined sulfate wood pulp, good filtration performance, strong absorption, ash content (< 0.15%), only for general qualitative chemical analysis and filtration of the precipitation or suspended solids in the solution. Qualitative filter paper don’t contain the impurities that dissolve in acid, alkali and other organic solvent , so it can be applicable to the pharmaceutical and chemical plant in the production of various reagents and solvents of filtering. According to filtration speed and separation performance , the filter paper are divided into three types: fast ( <35 s), medium (<70 s) and slow (<140 s).Generally, the fast is suitable for filtering gelatinous precipitate, such as ferric hydroxide, etc.; and slow type is for filtering fine grain such as barium sulfate precipitation. Size: Round- Φ 7 cm, Φ9 cm, Φ11 cm, Φ12.5 cm, Φ15 cm, Φ 18 cm, 100 / box; Square is 60 x 60 cm, 30 * 30 cm, etc.

Details

Technical Parameters

 

Type

Fast

Medium

Slow

Basis Weight(gsm)

80

80

80

Precipitate

Coarse and Gelatinous Precipitate

Crystalline

Fine Crystalline

Filter Speed(s)

35

70

140

Ash Content<%

0.15

0.15

0.15

Fe Content<%

0.003

0.003

0.003

Water Extracts PH

6.5-7.5

6.5-7.5

6.5-7.5

Pore Size (μm)

20-25

15-20

10-15

Water Soluble Chloride<%

0.02

0.02

0.02

 

Hits:  UpdateTime:2014-09-01 22:24:11  【Printing】  【Close
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