Pleated filter paper has major advantages over flat round filters:
- time savings required to fold round filters into squares to fit the cone of filter funnels in repetitive or multiple analyzes
- reduction of the overall filtration time thanks to the larger filtering surface; the normal slowing down of the filtration speed due to particle loading is delayed
- increase of the total load capacity thanks to the greater filtering surface
- maintenance of the filtration speed due to the reduced contact of the filter paper with the wall of the funnel and, of course, due to the self-standing shape of the filter itself
- pleating does not significantly affect any technical data and the same data as for round filters are valid
5V grade: 2.5 µm
This filter paper retains particles as small as 2.5 µm for qualitative analysis.
Slow filtration rate (Herzberg rate of 1420 s)
Technical features
Degree | Grade 5V |
Nominal retention of particles in liquids (at 98% efficiency) | 2.5 µm |
Nominal thickness | 200 µm |
Typical water flow | 5 ml / min |
Nominal base weight | 100 g / m² |
Nominal air flow | 96 s / 100 ml / in (for 9 cm diameter) |
Nominal ash content (determined by incineration of the filter at 900 ° C in the air) | 0.06% |
Material | Cellulose |
Typical tracks element layers | Aluminum 2.5 µg / g Antimony <0.5 µg / g Arsenic <0.5 µg / g Barium <0.5 µg / g Boron |
Applications | Excellent clarifying filter for turbid suspensions and for water and soil analysis. |
Format | Pleated discs |
Pieces per pack | 100 pieces |