Skip to content Skip to navigation menu

High-purity, Qualitative Filter Papers

These paper grades are used for analytical purposes that require a low ash content.

Grades 292 and 292a are especially suitable for soil analyses because they are low in nitrogen. For phosphate or sodium determination, we recommend grades 131 and 132.

   

Choose your product

Products (82)

Qualitative Papers/ Grade 292 / ⌀ 125 mm Folded Filters
Retention Rate
5–8 µm
Thickness
0.18 mm
Grade
292
Packaging
Non-sterile, bulk packed
Qualitative Papers/ Grade 292 / 460 x 570 mm Sheets
Dimensions
460 × 570 mm
Retention Rate
5–8 µm
Thickness
0.18 mm
Grade
292
Qualitative Papers/ Grade 292 a / ⌀ 240 mm Folded Filters
Retention Rate
4–7 µm
Thickness
0.19 mm
Grade
292 a
Packaging
Non-sterile, bulk packed
Qualitative Papers/ Grade 132 / ⌀ 270 mm Filter Discs
Retention Rate
5–7 µm
Thickness
0.17 mm
Grade
132
Packaging
Non-sterile, bulk packed
Qualitative Papers/ Grade 292 / ⌀ 150 mm Folded Filters
Retention Rate
5–8 µm
Thickness
0.18 mm
Grade
292
Packaging
Non-sterile, bulk packed

Grade

Material

Weight (g/m²)

Thickness

(mm)

Wet
bursting
strength
(
kPa)

Ash
content

(%)

Particle
retention (µm)

Properties

131

Refined pulp and Linters

80

0.16

20

< 0.02

3 - 5

Narrow pored, slow rate of filtration, with a chloride content (hot extract) of < 0.006 %.

132

Refined pulp and Linters

80

0.17

20

< 0.02

5 - 8

Medium pored, medium-slow rate of filtration, with a chloride content (hot extract) of < 0.006 %.

292

Cotton Linters

87

0.18

5

< 0.06

5 - 8

Medium pored, medium-slow rate of filtration

292a

Cotton Linters

97

0.19

5

< 0.06

4 - 7

Medium to narrow pored, medium-slow rate of filtration

Brochure

Filter Papers for the Laboratory and Industry
en 6.4 MB
Papiers filtres pour les laboratoires et l’industrie
fr 6.3 MB
宣传手册:实验室过滤产品精简目录
zh 19.0 MB
Carte da filtro per il laboratorio e l’industria
it 4.2 MB

Catalog

Laboratory Filtration Products
en 8.2 MB