Final Filtration
Applying membrane filtration to your beverage manufacturing process helps ensure complete removal of particles or microorganisms. Final membrane filters are used to effectively eliminate 99 to 100% of undesirable microbial content. They are ideal as a microbial barrier in a multi-barrier process.
Our range of final filters have been designed to give you superior performance in the removal of particles and microorganisms in your beverage processing applications.
In this section, you will find a general overview on final filtration. Our experts are ready to assist you in selecting and sizing the most appropriate filters to meet your specific needs.
Quality Assurance
Millipore’s final filters meet the FDA Indirect Food Additive requirements cited in 21 CFR 177.2910 and the criteria of USP <88> reactivity test for Class VI plastics. To ensure you the highest quality, our membrane filters are non-fiber releasing and manufactured in our facilities which adhere to FDA cGMP guidelines.
Membrane Filtration Selection Criteria
Millipore offers a variety of membrane filters designed for specific applications in your beverage process. The applications can be separated into 2 categories: liquid filtration or gas filtration. Hydrophilic filters are utilized for the filtration of aqueous solutions, while hydrophobic filters are used for gases. Your choice of the appropriate hydrophobic or hydrophilic filter will be based on your feed stream characteristics, process parameters and the appropriate pore size rating to ensure your target microorganism retention:
| Filter Pore Size | Microorganism to be removed |
| 0.22 µm | Bacteria |
 | Brevundimonas diminuta |
| Pseudomonas aeruginosa |
| Bacteriophage (Air Filtration) |
| 0.45 µm | Bacteria |
| Escherichia coli |
| Leuconostoc oenos |
| Pediococcus damnosus |
| Lactobacillus hilgardii |
| Oenococcus oeni |
| 0.55 µm | Bacteria & Yeast |
| Saccharomyces cerevisiae |
| Pediococcus damnosus |
| Lactobacillus brevis |
| 0.65 µm | Yeast |
| Saccharomyces cerevisiae |
| 1.0 µm | Protozoa |
| Giardia |
| Cryptosporidium |
Our broad choice of connections, lengths and elastomers enables you to find the best combination to suit your specific process application and existing hardware.
Cross-section of a Vitipore II filter | SEM of a Vittpore II filter with Brevundimonas diminuta |
You will find our advices for final filter selection in each section dedicated to specific beverage processes:
Products
| Final filters for liquids |
| Vitipore II and Vitipore II Plus |
| Durapore CVDI |
| Brewpore |
| Final filters for gases |
| Aervent |
| Optiseal with hydrophobic Aervent membrane |
| Aerex 2 |
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