Grade: BIO-91
Equivalent to Whatman Grade 91
Filtration Speed: Medium
Pore Size: 10μm
Basis Weight(g/m²): 84
Wet Burst(psi): >=320
Ash Content(%): < 0.13
Separating Property: PbSO4
Filtration Seconds: > 35 –< 70
Availability: In Stock
Hawach BIO-91 10 micron filter paper is a star product equivalent to Whatman’s Grade 91. As a wet strength supplier, we have a more competitive price and a proper retention rate and flow rate (10μm). BIO 91 filter paper discs are very tough and have 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.
As a filter paper supplier, Hawach complete diameter range of 70, 90, 110, 125, 150, 180, 185, 240, 270, and 300mm. Wet strength grade 91 filter paper has medium filtration speed, if you prefer a faster speed, you can choose filter paper sheets BIO-113. Hawach is a major wet strength manufacturer in the global filter paper market. The higher the degree of folding of the 10 micron filter paper, the higher the surface area that can be provided, and the better the filtering effect, but the wet strength manufacturer suggests being careful not to over-fold and cause the filter paper to break.
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 | Pore Size | Diameter | Package |
BIO-91-055 | Grade 91, medium flow rate | 10 μm | 55mm | 100pcs/pk |
BIO-91-070 | 70mm | |||
BIO-91-090 | 90mm | |||
BIO-91-110 | 110mm | |||
BIO-91-125 | 125mm | |||
BIO-91-150 | 150mm | |||
BIO-91-180 | 180mm | |||
BIO-91-185 | 185mm | |||
BIO-91-240 | 240mm | |||
BIO-91-270 | 270mm |