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 |
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 - Wet Strengthened 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 |