Grade: BIO-91
Separating Property: PbSO4
Filtration Seconds: > 35 –< 70
Filtration Speed: Medium
Ash Content(%): < 0.13
Pore Size : 10μm
Basis Weight(g/m²): 84
Wet Burst(psi): >=320
Wet Strengthened Filter Paper Grade: BIO-91
Description
Description
Hawach Scientific Co., Ltd BIO-91 filter paper is a star product equivalent to Whatman’s Grade 91 with more competitive price, which has proper retention rate and flow rate (10μm). Wet strength grade qualitative filter paper is very tough and has a high wet strength. In general qualitative applications, no significant impurities are introduced. However, the resin contains nitrogen, so it should be noted that it cannot be used for the determination of Kjeldahl. Some wet-strength qualitative filter papers have a folded form.
Features
Complete diameter range: 70, 90, 110, 125, 150, 180, 185, 240, 270, and 300mm
Particle retention greater than 10 microns
Advantages
Complete diameter range provided , Customizable model and size
Whatman equivalent quality but competitive price
Easy to operate: the filter paper is pre-cut, using directly
Wet strength qualitative filter paper superior work under high pressure or vacuum operation
Applications
Qualitative analytical separations for precipitates
Soil analysis and seed testing procedures
Separation solid foodstuffs from associated liquid or extracting liquid
Gas detection
Air pollution monitoring
Sugar analysis in sucrose
Grade Comparison
| Hawach Scientific Co., Ltd | Whatman | Advantec | Munktell | Ahlstrom | Macherey Nagel |
|---|---|---|---|---|---|
| BIO-91 | Grade 91 | n/a | 55/N | 615 | n/a |
Guide for Filter Paper
Technical Data
| Grade | Separating Property |
Filtration Seconds |
Filtration Speed |
Ash Content (%) |
Pore Size (μm) |
Basis Weight (g/m2) |
Wet Burst (mm H2O) |
|---|---|---|---|---|---|---|---|
| BIO-91 | PbSO4 | > 35 –< 70 | Slow | <0.13 | 10 | 84 | >= 320 |
Ordering Information
| Item # | Description |
|---|---|
| BIO-91-070 | Wet Strengthened Filter Papers, Grade 91, Medium, 10μm, 70mm, 100pcs/pk |
| BIO-91-090 | Wet Strengthened Filter Papers, Grade 91, Medium, 10μm, 90mm, 100pcs/pk |
| BIO-91-110 | Wet Strengthened Filter Papers, Grade 91, Medium, 10μm, 110mm, 100pcs/pk |
| BIO-91-125 | Wet Strengthened Filter Papers, Grade 91, Medium, 10μm, 125mm, 100pcs/pk |
| BIO-91-150 | Wet Strengthened Filter Papers, Grade 91, Medium, 10μm, 150mm, 100pcs/pk |
| BIO-91-180 | Wet Strengthened Filter Papers, Grade 91, Medium, 10μm, 180mm, 100pcs/pk |
| BIO-91-185 | Wet Strengthened Filter Papers, Grade 91, Medium, 10μm, 185mm, 100pcs/pk |
| BIO-91-240 | Wet Strengthened Filter Papers, Grade 91, Medium, 10μm, 240mm, 100pcs/pk |
| BIO-91-270 | Wet Strengthened Filter Papers, Grade 91, Medium, 10μm, 270mm, 100pcs/pk |
| BIO-91-320 | Wet Strengthened Filter Papers, Grade 91, Medium, 10μm, 320mm, 100pcs/pk |
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