Thermo Scientific Centrifuge Tube Filter Unit 150 ml Rapid Flow 0.2 um - 3 Units

Thermo Scientific Nalgene 564-0020 Rapid-Flow Filter Unit – 150 mL to 50 mL, 0.2 µm PES

The Thermo Scientific Nalgene 564-0020 is a specialized, ready-to-use Rapid-Flow Filter Unit designed to filter fluid directly into a standard 50 mL conical centrifuge tube. Engineered specifically for cell culture applications, this sterile device features an upper 150 mL funnel paired with an asymmetric 0.2 µm Polyethersulfone (PES) membrane. By utilizing Nalgene's proprietary Rapid-Flow multi-column support system, it delivers exceptionally fast flow rates and minimal pressure drop, drastically reducing the time required to filter viscous sera, media, and biological buffers. Certified sterile, non-cytotoxic, and endotoxin-free, this unit is rigorously tested for mouse embryo assay (MEA) and stem cell suitability, ensuring absolute sample safety for highly sensitive downstream workflows.

Technical Performance and Design

• Asymmetric PES Membrane: The 0.2 µm Polyethersulfone membrane features a dual-porosity zone that acts as a built-in pre-filter. It is highly hydrophilic and exhibits extremely low protein binding, ensuring maximum recovery of critical growth factors and enzymes.

• Rapid-Flow Support Structure: The unique, evenly spaced multi-column support grid underneath the membrane prevents the filter from warping under vacuum, significantly increasing flow velocity and preventing premature clogging.

• Direct-to-Tube Filtration: The unit filters fluids directly into an attached 50 mL conical centrifuge tube. Once filtration is complete, the funnel is simply unscrewed, and the tube can be capped with the included sterile closure for immediate storage or centrifugation.

• Certified Purity Profile: Manufactured under strict quality controls, the units are gamma-irradiated to guarantee sterility and are verified to be free of pyrogens and DNA contamination right out of the packaging.

Product Specifications

• Catalog Number: 564-0020

• Upper Funnel Capacity: 150 mL

• Receiver Tube Capacity: 50 mL (Conical Centrifuge Tube)

• Membrane Material: Polyethersulfone (PES)

• Pore Size: 0.2 µm (50 mm Diameter)

• Sterility: Pre-Sterilized, MEA / Stem Cell Tested

Key Benefits & Applications

• Streamlined Workflow: Filtering directly into the final 50 mL conical tube entirely eliminates the risky, time-consuming step of transferring sterile media from a standard receiver flask to a storage tube.

• Cell Culture Optimization: The absolute gold standard for clarifying and sterilizing small batches of tissue culture media, serum, antibiotics, and proprietary protein additives.

• High Throughput Efficiency: The combination of the asymmetric PES and Rapid-Flow geometry allows researchers to quickly process dense, heavily particulate fluids that would immediately choke standard filtration units.

• Space Saving Storage: The narrow conical tube footprint takes up significantly less space in laboratory refrigerators and freezers compared to traditional bulky receiver bottles.

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