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Fisherbrand™ Qualitative Grade Plain Filter Paper Circles and Sheets - P4 Grade
Ideal for clarifying and removing particles of 1μm and larger, and in applications that do not require a low-ash or ashless paper
Catalog No. 09-803-6D
Description
- Cellulose fiber papers
- Available as circular, rectangular, and square sheets
- Good wet strength
- Suitable for gravity, vacuum filtration systems and low suction filtration
- Particle Retention: 4–8μm
- Medium-fine porosity
- Filtration Speed: Herzberg, 730 sec.
- Flowrate: Slow—25mL/min.
- Surface: Smooth
Not suitable for nitrogen analysis.
Applications:
General purpose: slightly slower, more retentive than P5. Retains MgNH4PO4, silver sulfide, cadmium sulfide. In air monitors, collects particulates and chromic acid mist.
Specifications
| Disc | |
| 730 sec. | |
| General purpose: slightly slower, more retentive than P5. Retains MgNH4PO4, silver sulfide, cadmium sulfide. In air monitors, collects particulates and chromic acid mist | |
| Medium Fine |
| 4 to 8 μm | |
| Slow: 25mL/min. | |
| P4 | |
| 9 cm |
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