Grade 520 a ½ Qualitative Filter Paper Folded (Prepleated)
A thin paper with great wet strength and a very high flow rate. Frequently used in technical applications such as the filtration of viscous liquids and emulsions (e.g., sweetened juices, spirits and syrups, resin solutions, oils, or plant extracts).
- Savings in time required to quadrant-fold circles to fit conical filter funnels in repetitive or multiple analyses.
- Decreased overall filtration time because of the extra surface area exposed; the normal slow down of filtration speed due to the loading of particulate is postponed.
- Increased total loading capacity as more filter area is available.
- Maintained flow rate due to the reduction in filter paper contact with funnel side and the self-supporting shape of the filter itself.
- The prepleating does not significantly affect any of the technical data, and the same figures may be used for the flat circles.
Time-saving Whatman qualitative grades are offered in this convenient form, which gives major advantages over flat circles.
Grade 520 a ½: 15-18µm
Specifications:
- Grade: Grade 520 a ½
- Grade Type: Folded (Prepleated)
- Particle Retention in Liquid Max.: 18 µm
- Typical Thickness: 300 µm
- Basis Weight: 90g/m2
- Filtration Speed (Herzberg): Approx. 17.5s
- Material: Cellulose
- Alpha Cellulose Content Min.: 98%
- Properties: Very fast, creped, high wet strength
Ordering Information:
| Cat. No. |
Diameter (mm.) |
Qty. |
| 10331451 |
Qualitative Filter Paper, 240 mm |
100/pk |
| 10331456 |
Qualitative Filter Paper, 500 mm |
100/pk |
| 10331487 |
Qualitative Filter Paper, 580 x 580 mm |
250/pk |
