Polypropylene Prefilters and Membranes
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Overview
Specifications
Ordering Information
Documentation
FAQ
| Question | Answer |
|---|---|
| What is the difference between pore size and pore size distribution? | Whereas pore size is a measure of the diameter of the largest pore, pore size distribution is a measure of the range of pore sizes. The range of pore sizes can be normally distributed, and the spread can be quite narrow (e.g. the ratio of largest to smallest may be less than 2). On the other hand, pore size distribution can be very heterogeneous. In the case of large spreads and heterogeneity, the pore size will be far less predictive of flow rate (either filtration or capillary) than it will be for a membrane with a narrow pore size distribution. It is important to note that the pore size corresponding to the bubble point is not at the middle of the distribution, but is the largest pore. |
Related Products & Applications
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| Sample Preparation |
| Dialysis and Filtration |
Categories
| Reagents, Chemicals and Labware > Lab Filtration > Filter Discs and Membranes |
Millipore polypropylene filters are constructed of 100% virgin polypropylene media. They are ideally suited for general clarifying and prefiltration applications including solvents, deionized water and bioburden reduction. They also provide broad thermal compatibility.
The prefilters provide high particle retention, high dirt holding capacity and low pressure drop. They are designed for filtration of organic solvents, but they can also be used, once properly wetted with alcohol, for the filtration of aqueous solutions.
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Polypropylene prefilter
Features & Benefits
- Compatible with aggressive solvents
- Prefilters have high dirt-holding capacity
Applications
General Prefiltration and Clarification, Suitable for Organic Solvents
General Specifications
Color: white
Surface: plain
Wettability: hydrophobic
Sterilization: Gamma or EO compatible
| Specifications | ||||
| Applications | Filter Code* | Pore Size (µm) |
Thickness (µm) |
Max. Temp. (°C) |
| Polypropylene Prefilters | ||||
| Clarification of aqueous solutions, prefiltration upstream of membrane filters with pore sizes of 0.2 – 0.6 µm | AN06 | 0.6 | 140 | 90 |
| Clarification of aqueous solutions, prefiltration upstream of membrane filters with pore sizes of 0.5 – 2.0 µm | AN12 | 1.2 | 140 | 90 |
| Clarification of aqueous solutions, prefiltration upstream of membrane filters with pore sizes of 0.8 – 8.0 µm | AN25 | 2.5 | 140 | 90 |
| Collection of cells and precipitates | AN50 | 5 | 110 | 90 |
| AN1H | 10 | 150 | 90 | |
| Clarification of aqueous and nonaqueous solutions | AN3H | 30 | 200 | 90 |
| Polypropylene Net Filters | ||||
| Collection of cells and protein precipitates | PP25 | 25 | 360 | 100 |
| Large particle removal, contamination analysis | PP45 | 45 | 430 | 100 |
| PP80 | 80 | 450 | N/A | |
| *Corresponds to first 4 digits of catalogue number | ||||