Qualitative, standard

Cellulose filters made from high quality cotton. The filters are used in qualitative analysis techniques to determine and identify substances. Some grades are reinforced with a stable resin, making them resistant to moisture.
Grade
Filtration rate / aspect
Retention (µm)
Thickness (µm)
Weight (g/m²)
1
average
11
180
88
2
average
8
190
103
3
average - thick
6
390
187
4
fast
20-25
205
96
5
slow
2,5
200
98
6
average - slow
3
180
105

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