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Q: Are Cobetter centrifuge filters reusable?

We recommend using them once, but some of our customers tried to use it for the same sample up to maximum 3 times, only for reference only.

Q: How to clean Cobetter centrifuge filters?

First, soak them in 0.1M NaOH for 24 hours, then soak them in 20% ethanol for preservation.

Q: Can Cobetter centrifuge filters be used to filtrate exosomes?

Yes, and it is recommended to use 100kDa first and then 3kDa centrifuge filters to concentrate exosomes with serum, and 3kDa centrifuge filters can be used directly for those without serum.

Q: Are Cobetter centrifuge filters compatible with regular centrifuges?

No, they aren't. They are matched to conical bottom centrifuges.

Q: What is the size of the outer tubes?

The outer tubes for 4ml centrifuge filters is 15ml, and the outer tubes for 15ml centrifuge filters is 50ml.

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🧬 Filter smarter, not harder — ultrafiltration redefined for the modern lab pro!

HIGH PROTEIN RECOVERY - Recover over 90% of your proteins, ensuring maximum yield for critical experiments.
SPEED MEETS PRECISION - Achieve ultra-fast protein concentration in just 10-30 minutes, saving you valuable lab time.
VERSATILE COMPATIBILITY - Works seamlessly with both fixed angle and swing bucket rotors for flexible centrifuge setups.
PREMIUM QUALITY ASSURANCE - ISO 9001:2015 certified and USP Class VI compliant materials guarantee lab-grade reliability.
OPTIMIZED MOLECULAR FILTRATION - 3kDa RC membrane ensures selective ultrafiltration perfect for proteins, antibodies, and enzymes.

The COBETTER 3kDa Ultra Centrifugal Filter Unit features a 4mL polypropylene tube with a regenerated cellulose membrane, delivering rapid ultrafiltration with over 90% protein recovery. Compatible with multiple rotor types and chemically robust, it meets ISO 9001:2015 and USP Class VI standards, making it an essential tool for protein concentration, purification, and buffer exchange in professional research environments.

Have a Question? See What Others Asked

Are Cobetter centrifuge filters reusable?

How to clean Cobetter centrifuge filters?

Can Cobetter centrifuge filters be used to filtrate exosomes?

Are Cobetter centrifuge filters compatible with regular centrifuges?

What is the size of the outer tubes?

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Brand	COBETTER
Manufacturer	COBETTER
Country of Origin	USA
Model number	ULRC0030040P-15-JP
Colour	4ml
Number of Memory Sticks	15
Item Weight	450 g
Package Dimensions	26.3 x 15.6 x 15.4 cm; 450 g
Item model number	ULRC0030040P-15-JP
Are batteries included?	No

3kDa Ultra Centrifugal Filter Unit 4mL Polypropylene Centrifuge Tubes with RC Membrane, Screw Caps (15Pcs)

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Common Questions