15mL sample volume
5–100kDa MWCO
PES low-binding membrane
>90% recovery
Protein, nucleic acid, virus
20 pcs/carton
Availability: In Stock
Centrifugal Filter Units
Description
Product Overview
Hawach Centrifugal Filter Units are designed for the concentration, purification, and separation of biological macromolecules such as proteins, nucleic acids, and viruses. By combining centrifugal force with ultrafiltration membrane technology, these centrifugal filter units enable efficient molecular weight-based separation while maintaining high sample recovery.
Featuring a low protein-binding PES membrane and available in 5 kDa, 10 kDa, 30 kDa, 50 kDa, and 100 kDa MWCO options, these centrifugal filter units are suitable for protein concentration, DNA/RNA purification, desalting, and sample preparation workflows in life science, biotechnology, pharmaceutical, and food laboratories.
What Are Centrifugal Filter Units?
Centrifugal filter units are membrane-based laboratory devices used to separate and concentrate biological molecules according to molecular weight. During centrifugation, molecules smaller than the membrane’s molecular weight cut-off (MWCO) pass through the membrane, while larger molecules are retained in the sample chamber.
This process allows researchers to concentrate target biomolecules, remove small contaminants, and simplify downstream analytical procedures.
Key Features
High Sample Recovery
The unique vertical membrane design maximizes the effective filtration area, enabling rapid sample processing with recovery rates greater than 90%.
Low Protein-Binding PES Membrane
Each centrifugal filter unit incorporates a polyethersulfone (PES) ultrafiltration membrane with low protein adsorption characteristics, helping minimize sample loss during concentration and purification.
Efficient Molecular Weight Separation
The ultrafiltration membrane selectively retains larger biomolecules while allowing smaller molecules and impurities to pass through, making these centrifugal filter units suitable for concentration and purification applications.
Reliable Sealing Performance
The integrated design provides effective sealing and helps prevent membrane dry-locking during centrifugation, reducing the risk of sample loss caused by over-centrifugation.
Easy Sample Observation
The transparent tube construction allows convenient visual monitoring of sample volume and filtration progress throughout the centrifugation process.
Product Structure
Ultrafiltration Inner Tube
Manufactured from durable polycarbonate (PC), the inner tube houses the PES ultrafiltration membrane responsible for molecular weight-based separation.
Collection Tube
The filtrate collection tube is manufactured from polypropylene (PP), providing reliable collection of filtered solutions after centrifugation.
Ultrafiltration Membrane
The PES membrane serves as the core filtration component, allowing selective passage of molecules according to the specified molecular weight cut-off (MWCO).
Available MWCO Options
Different MWCO options allow researchers to select the appropriate centrifugal filter unit according to sample characteristics and separation requirements.
| MWCO | Typical Applications |
| 5 kDa | Small peptides and low molecular weight biomolecules |
| 10 kDa | Enzymes and small proteins |
| 30 kDa | Protein concentration and purification |
| 50 kDa | Large proteins and biological macromolecules |
| 100 kDa | Large molecular complexes and virus-related research |
Applications
Protein Concentration & Purification
Concentrate proteins while removing low molecular weight substances and impurities from biological samples.
DNA & RNA Purification
Suitable for nucleic acid preparation, purification, and removal of enzymes, ions, and other small molecules.
Biochemical Research
Used for concentration, purification, and sample preparation of biological macromolecules in biochemical laboratories.
Pharmaceutical Research
Supports the isolation and analysis of biological components during drug discovery and development workflows.
Pharmaceutical Formulation
Helps remove macromolecular impurities from solutions to improve formulation purity.
Food Industry Analysis
Suitable for the concentration and detection of bioactive compounds such as polyphenols, antioxidants, and other functional ingredients.
Technical Specifications
| Parameter | Specification |
| Sample Volume | 15 mL |
| Membrane Material | PES (Polyethersulfone) |
| Inner Tube Material | PC (Polycarbonate) |
| Collection Tube Material | PP (Polypropylene) |
| Color | Transparent |
| Recovery Rate | >90% |
| Sterility | Non-Sterile |
| Packaging | Individually Packed |
Ordering Information
| Cat. No. | Description | MWCO | Package |
| 11343001 | 15 mL Centrifugal Filter Unit, PES Membrane | 5 kDa | 20 pcs/carton |
| 11343002 | 15 mL Centrifugal Filter Unit, PES Membrane | 10 kDa | 20 pcs/carton |
| 11343003 | 15 mL Centrifugal Filter Unit, PES Membrane | 30 kDa | 20 pcs/carton |
| 11343004 | 15 mL Centrifugal Filter Unit, PES Membrane | 50 kDa | 20 pcs/carton |
| 11343005 | 15 mL Centrifugal Filter Unit, PES Membrane | 100 kDa | 20 pcs/carton |
Frequently Asked Questions
What are centrifugal filter units used for?
Centrifugal filter units are used for concentrating, purifying, and separating biological macromolecules such as proteins, nucleic acids, and viruses.
What membrane material is used?
The filtration membrane is made of low protein-binding polyethersulfone (PES), which helps reduce sample adsorption and improve recovery.
What MWCO options are available?
Available molecular weight cut-offs include 5 kDa, 10 kDa, 30 kDa, 50 kDa, and 100 kDa.
Can these centrifugal filter units be used for protein concentration?
Yes. They are commonly used for concentrating proteins and removing low molecular weight contaminants.
Can they be used for DNA and RNA purification?
Yes. These centrifugal filter units are suitable for nucleic acid purification and removal of enzymes, ions, and other small molecules.
Are the units sterile?
No. The products are supplied non-sterile and may be disinfected using 70% ethanol before use if required.
What is the recovery rate?
The vertical membrane design provides recovery rates greater than 90%.
Are the units individually packaged?
Yes. Each centrifugal filter unit is individually packed for convenient laboratory use.
The quality has a guarantee
Fast & safe shipping worldwide
Contact Hawach for a Quotation
Enter your email address and our sales staff will
contact you as soon as possible.
