
( Brand: Foxx Life Sciences ), ( Manufacturer Part Number: 1402-RLS ), ( Part Type: Vacuum Centrifuge Filter ), ( Intended Use/discipline: Biological Laboratory, Dental Laboratory, Medical Laboratory, Microbiological Laboratory, Physical Laboratory ), ( Country Of Origin: United States ), ( Unit Quantity: 25 ), ( Unit Type: Unit ), ( Material: Plastic, Pes ), ( Volume: 50ml, 0.2um ), ( Additional Search Terms: Surplus Laboratory Bench Supplies Consumables )
The **Foxx Sciences Genesee 1402-RLS 25 50mL Autofil Centrifuge Funnel Vacuum Filter with 0.2 m PES Membrane** is a precision-engineered laboratory accessory designed to streamline and enhance filtration processes in research, biotechnology, and pharmaceutical applications. This high-performance vacuum filtration system combines the efficiency of a 50mL centrifuge funnel with the reliability of a disposable, sterile 0.2-micron polyethersulfone (PES) membrane, making it an indispensable tool for scientists seeking both speed and sterility in their workflows. The Autofil design eliminates the need for manual filtration aids, such as glass wool or filter paper, by integrating a self-contained, pre-installed membrane that ensures consistent pore size and uniform filtration across every use. The 0.2 m PES membrane is particularly well-suited for applications requiring high retention of bacteria, viruses, and fine particulate matter while allowing liquids to pass through with minimal resistance, making it ideal for cell culture media preparation, buffer sterilization, and sample clarification. The durable polypropylene construction of the funnel ensures chemical resistance and longevity, even when exposed to harsh solvents, organic reagents, or acidic/basic solutions, while its ergonomic design allows for easy handling and secure attachment to standard laboratory vacuum systems. The 25mm diameter of the funnel strikes a balance between capacity and compatibility with most vacuum filtration setups, providing ample space for processing moderate volumes without sacrificing precision. Whether used in conjunction with a centrifuge for pre-concentration of samples or directly under vacuum for rapid filtration, this system delivers reproducible results with minimal user intervention, reducing the risk of contamination and operator error. Its disposable nature also simplifies cleanup and ensures that each filtration is performed with a fresh, uncontaminated membrane, further enhancing the reliability of experimental outcomes. Overall, the Foxx Sciences Genesee 1402-RLS is a versatile, cost-effective solution for laboratories prioritizing efficiency, sterility, and ease of use in their filtration protocols.
**Pros and Cons of buying a Foxx Sciences Genesee 1402-RLS 25 (50 mL Autofil Centrifuge Funnel Vacuum Filter, 0.2 m PES)**
### **Pros**
1. **Efficiency and Speed** The autofil design allows for quick and hands-free filtration, reducing manual labor and speeding up workflows, especially in high-throughput applications like cell culture, molecular biology, or sample preparation.
2. **Compatibility with Centrifuges** Designed to work with standard centrifuge rotors (e.g., 25 mL capacity), making it versatile for labs with existing equipment. The RLS (rotor-locking system) ensures secure attachment, minimizing spills or leaks during centrifugation.
3. **High Filtration Quality** The 0.2 m PES (polyether sulfone) membrane effectively retains particles, bacteria, and viruses while allowing liquids to pass through, which is critical for sterile filtration in biological and pharmaceutical applications.
4. **Low Protein Binding** PES membranes are known for their low non-specific binding properties, preserving the integrity of proteins, nucleic acids, and other sensitive biomolecules during filtration.
5. **Durability and Reusability** The funnel and filter assembly is designed for repeated use (with proper cleaning and sterilization), reducing long-term costs compared to disposable filters.
6. **Sterility and Contamination Control** The sealed system minimizes exposure to airborne contaminants, which is essential for maintaining sterile conditions in sensitive experiments.
7. **User-Friendly Design** The autofil mechanism simplifies the process of transferring filtrate without manual pouring, reducing user error and improving consistency.
8. **Wide Application Range** Suitable for a variety of lab techniques, including:- Cell culture supernatant clarification
- Sterile filtration of buffers, media, or reagents
- Sample preparation for PCR, sequencing, or protein assays
- Removal of debris from biological samples
### **Cons**
1. **Cost** While reusable, the initial purchase price may be higher than single-use disposable filters, though the long-term savings can offset this. Budget-conscious labs may need to weigh the upfront investment against frequency of use.
2. **Maintenance and Cleaning** Requires thorough cleaning and sterilization between uses to prevent cross-contamination or membrane clogging. Improper cleaning can degrade performance or shorten the filter s lifespan.
3. **Limited Flow Rate** The 0.2 m pore size is optimal for sterile filtration but may result in slower flow rates compared to larger pore filters (e.g., 0.45 m or 1.2 m), which could extend filtration times for large volumes.
4. **Compatibility Issues** Not all centrifuge rotors may accommodate the RLS system perfectly, and labs with non-standard setups might need adapters or may face compatibility challenges.
5. **Potential for Membrane Damage** Over-pressurization or improper handling during centrifugation can damage the PES membrane, leading to leaks or reduced filtration efficiency.
6. **Sterilization Requirements** Autoclaving or chemical sterilization may not be suitable for all components (e.g., plastic parts may degrade). Labs must follow manufacturer guidelines to avoid damaging the filter or funnel.
7. **Single-Use Alternatives** For one-time or low-frequency use, disposable vacuum filters may be more convenient, though they generate more waste and lack the durability of reusable systems.
### **Ending Conclusion**
The Foxx Sciences Genesee 1402-RLS 25 autofil centrifuge funnel is a high-quality, reusable tool ideal for labs prioritizing efficiency, sterility, and long-term cost savings in sterile filtration tasks. Its autofil mechanism and PES membrane make it particularly well-suited for biological and pharmaceutical applications where contamination control and sample integrity are critical. However, its effectiveness depends on proper maintenance, cleaning, and adherence to manufacturer guidelines. The initial cost and maintenance requirements may deter smaller labs or those with infrequent filtration needs, but for high-throughput or sterile workflows, it offers significant advantages over disposable alternatives.
### **Recommendation**
**Buy this product if:**- You perform frequent sterile filtrations (e.g., cell culture, molecular biology, or sample prep) and need a durable, reusable solution.
- Your lab already uses compatible centrifuge rotors, and you can commit to proper cleaning and sterilization protocols.
- You prioritize speed, hands-free operation, and low protein binding for sensitive applications.
- Long-term cost savings justify the upfront investment.
**Avoid or consider alternatives if:**- Your filtration needs are infrequent or one-time, making disposable filters more practical.
- Your lab lacks the time or resources to maintain and sterilize reusable equipment.
- You require faster flow rates, which may be better achieved with larger pore filters (e.g., 0.45 m).
- Budget constraints make the initial cost prohibitive without clear long-term savings.
For labs undecided between reusable and disposable options, a trial run or consultation with a lab supply specialist could help determine the best fit for specific workflows.
BIOTECH BARGAINS item for sale. Individually packaged. GSR veers 1736 GS 9.9.5 1736 New, lot of 25 filter funnel assemblies.