| Qualitative Filter Paper – Standard Grades | |||||
| Hawach | BIO-1 | BIO-2 | BIO-3 | BIO-4 | BIO-5 |
| Whatman | Grade 1 | Grade 2 | Grade 3 | Grade 4 | Grade 5 |
| Qualitative Filter Paper – Wet Strengthened Grades | |||||
| Hawach | BIO-91 | BIO-113 | |||
| Whatman | Grade 91 | Grade 113 | |||
| Quantitative Filter Paper | |||||
| Hawach | BIO-40 | BIO-41 | BIO-42 | BIO-43 | BIO-44 |
| Whatman | Grade 40 | Grade 41 | Grade 42 | Grade 43 | Grade 44 |
Qualitative filter paper covers a wide range of laboratory applications and frequently used for clarifying liquids.
Quantitative filter paper is suitable for a wide range of critical gravimetric analytical filtration procedures.
| Grade |
Particle Retention
|
Filtration Speed
|
Ash Content (%)
|
Basis Weight (g/m2)
|
Wet Burst (mm H2O)
|
| Qualitative Filter Paper – Standard Grades | |||||
| BIO-1 | 11μm | Medium | <0.1 | 84 | >140 |
| BIO-2 | 8μm | Medium | >140 | ||
| BIO-3 | 20μm | Fast | >120 | ||
| BIO-4 | 2.5μm | Slow | >180 | ||
| BIO-5 | 3.0μm | Slow | >180 | ||
| Qualitative Filter Paper – Standard Grades | |||||
| BIO-91 | 10μm | Medium | <0.13 | 84 | >=320 |
| BIO-113 | 30μm | Fast | 68 | >=320 | |
| Quantitative Filter Paper | |||||
| BIO-40 | 8.0μm | Medium | <0.007 | 84 | >140 |
| BIO-41 | 20-25μm | Fast | >120 | ||
| BIO-42 | 2.5μm | Slow | >180 | ||
| BIO-43 | 16μm | Medium to Fast | >140 | ||
| BIO-44 | 3μm | Slow | >180 | ||
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