Description
Product Overview
QOAEZK bottletop lab filters are designed for efficient and safe filtration in laboratory settings. These filters feature a polystyrene funnel with a 250mL capacity and a 45mm diameter polyethylene neck adaptor, including an angled hose connector for simplified vacuum line attachment. The polyethersulfone (PES) membrane has a 0.22μm pore size and 64sq cm area, providing fast flow rates and high throughput, capable of filtering 1.5–2L. Each unit is individually packaged, sterile, and certified nonpyrogenic, with gamma sterilization ensuring safety. Manufactured by QOAEZK, these filters meet cGMP requirements and are ideal for filtering and storing aqueous solutions like cell culture media and biological fluids.

Usage
These bottletop lab filters are suitable for various laboratory applications, including filtering cell culture media, biological fluids, and other aqueous solutions. They are commonly used in research labs, pharmaceutical development, and biotech industries where sterile filtration is critical. The target audience includes laboratory technicians, researchers, and professionals in industrial and scientific fields who require reliable, high-performance filtration with low protein binding and minimal extractables. The angled hose connector simplifies vacuum line setup, making them practical for routine lab workflows.
Why Choose Us
QOAEZK bottletop lab filters stand out due to their high performance, safety, and compliance. The PES membrane ensures the fastest flow rates and highest throughput while maintaining low protein binding and extractables. Each filter is gamma sterilized and certified nonpyrogenic, reducing contamination risks. The design and manufacturing processes adhere to cGMP requirements, providing quality assurance for critical applications. With individually packaged units and a user-friendly vacuum attachment, these filters offer reliability and ease of use in demanding laboratory environments.
Key Features
- Fast flow rates and high throughput for efficient filtration
- Low protein binding and extractables to preserve sample integrity
- Gamma sterilized and certified nonpyrogenic for safety
- Easy vacuum line attachment with angled hose connector
- cGMP compliant design and manufacturing for quality assurance
FAQ
What is the pore size of the PES membrane?
The PES membrane has a 0.22μm pore size, ideal for filtering small particles and ensuring sterility in applications like cell culture media.
Are these filters reusable?
No, these filters are designed for single-use to maintain sterility and prevent cross-contamination in laboratory settings.
What solutions can be filtered with this product?
They are suitable for filtering cell culture media, biological fluids, and other aqueous solutions where sterile filtration is required.
Is the filter compatible with standard vacuum systems?
Yes, the polyethylene neck adaptor with an angled hose connector allows for easy attachment to standard vacuum lines.
How is the filter sterilized?
Each filter undergoes gamma sterilization and is certified nonpyrogenic to ensure safety and compliance with laboratory standards.






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