Qualitative filter papers
Grade 111 — Fast filtering

Application : for coarse and voluminous precipitates like hydroxides and sulphides.
Information to order

Grade 112 — Medium fast filtering

Application : typical grade for qualitative tasks, most of sulphides, beer and malt analysis.
Information to order

Grade 113 — Medium filtering

Application: suitable for fast filtration of liquids with fine particle.
Information to order

Grade 114 — Slowly filtering

Application : filtration of fine precipitates such as nickel sulphide, lead dioxide, calcium fluoride.
Information to order

Grade 115 — Very slowly filtering

Application : for extremely difficult filtration, barium sulphate, metastannic acid, cuprous oxide
Information to order

Grade 118 — Very slowly filtering

Application : for extremely difficult filtration, barium sulphate, metastannic acid, cuprous oxide
Information to order

Grade 132 — Low grease content

Application: for natural substances, greases.
Information to order

The extremely pure filter paper grades are made of cellulose with an alpha content of nearly 100% according precise norms
The ash content for these grades is approximatively 0,06 %.
Applications
Chemical industry
Food industry
Beverage industry
Atmospheric analysis
Essential and industrial oils
Technical specifications
  Weight Thickness Pore size Filtration vel. Burst strength
Grade g/m² mm µm sec* kg/cm²
111 84 0,20 12-15 10 >0,30
112 84 0,17 8-12 20 <0,30
113 87 0,16 5-8 50 >0,10
114 84 0,14 3-5 100 >0,30
115 84 0,14 2-3 180 >0,30
118 80 0,14 1-2 300 >0,30
132 80 0,16 8-12 20 >0,20
*according to DIN 53137