Laboratory
50B
What is Grade 50B?
Johnson Test Papers grade 50B is a very thick filter with fine particle filter and good loading capacity. It offers a smaller pore size than 50A with high wet strength. 50B filters are particularly useful for liquid clarification of suspensions loaded with fine particulates and liquid scintillation counting.
- Nominal pore size of 1.0 µm
- Appropriate for liquid clarification and/or liquid scintillation
50B Fine Particle Filter Benefits
Liquid scintillation counting (LSC) requires a fine particle filter, preferably with a high loading capacity. Grade 50B filters from Johnson Test Papers are ideal for this and similar applications requiring filtration of large volumes such as:
- Membrane pre-filtration
- Quantification of solids
- Waste water analysis
- Liquid clarification for suspended solids analysis
| Whatman Cross Reference | = No.GFB |
|---|---|
| Speed class | Medium / Fast, very high loading |
| Thickness (mm) | 0.70 |
| Pore size (μM) | 1.0 |
| Weight (g/m²) | 143 |
| Filtration Speed (sec*) | 200 |
| Burst Strength (Kg/cm²) | 50 |
| Diameter (mm) | Product Code |
|---|---|
| mm: 21 | Product code: 50B021 |
| mm: 24 | Product code: 50B024 |
| mm: 25 | Product code: 50B025 |
| mm: 47 | Product code: 50B047 |
| mm: 55 | Product code: 50B055 |
| mm: 90 | Product code: 50B090 |
| mm: 110 | Product code: 50B110 |
| mm: 125 | Product code: 50B125 |