SKU: 93070615331

Carboxylated magnetic microspheres (low non-specif

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Description

Carboxylated magnetic microspheres (low non-specifProduct Name Carboxylated magnetic microspheres (low non specificity) Product Overview Carboxylated Magnetic Microspheres (low non specificity) are functionalized nano or micron sized magnetic particles with abundant carboxyl functional groups introduced on the surface and a special chemical treatment to reduce the possibility of non specific adsorption. The 1um carboxylated magnetic microspheres are synthesized by core shell structure design, with

Product Name

Carboxylated magnetic microspheres (low non-specificity)

 Product Overview

Carboxylated Magnetic Microspheres (low non-specificity) are functionalized nano- or micron-sized magnetic particles with abundant carboxyl functional groups introduced on the surface and a special chemical treatment to reduce the possibility of non-specific adsorption. The 1um carboxylated magnetic microspheres are synthesized by core-shell structure design, with inner core PS spheres, outer iron tetroxide, outermost encapsulation layer, and carboxyl groups obtained by polymer modification. With low non-specific adsorption, they can be covalently coupled with peptides, proteins, antibodies, oligonucleotides and other biological ligands under the action of special chemical reagents (e.g., EDC), and are especially suitable for cell sorting, affinity chromatography and immunoassay.

Technical Parameter

Concentration: 10 mg/mL

Solvent: water

Diameter: 1um

Density of carboxyl : 1000 nmol/mg

Surface potential: -35 mV

Magnetic content: 35%-45%

Product Features

 

Low non-specific adsorption: the carboxylation of the surface of these microspheres reduces non-specific adsorption, which is particularly important for biomedical experiments that require highly specific binding . 

High carboxyl content: The high concentration of carboxyl functional groups on the surface of the microspheres facilitates the coupling of a wide range of biomolecules, such as peptides, proteins, antibodies, oligonucleotides, etc., via covalent bonds.

Superparamagnetic: The carboxylated magnetic microspheres are superparamagnetic, which allows them to be rapidly separated under an applied magnetic field, facilitating experimental manipulation.  Monodispersity and stability: the microspheres have good monodispersity and stability in water, which is conducive to the reproducibility of experiments and consistency of results.

Application Fields

 

Separation and purification of biomolecules: e.g. affinity chromatography of proteins, nucleic acids, cells, etc. 

Immunoprecipitation and immunoprecipitation: for the study of protein-protein interactions. 

Cell sorting: magnetic separation based on cell surface markers. 

Drug carriers: as part of targeted drug delivery systems. 

Bioassays: Used in sensors and diagnostic reagents to capture target molecules.

Related Information

Carboxylated magnetic microspheres have good hydrophilicity and monodispersity. Due to the high magnetic content, the microsphere is easy to precipitate at the bottom after a long time of placement, and can be suspended again after a short time of ultrasonic treatment or vibration before use. Sealed, avoid light, and keep at 4¡ãC Expiry date: Six months before unsealing.

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SKU: 93070615331

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TERESA
Lake Worth, US
★★★★★ 4
Not indestructible, but is very tough.
Pattern Name: Ball, Size: Large - 3 Inch / 12 oz
My dog destroyed this, but it took a little longer than it usually does. Would love to know how the lifetime replacement works. There is no information that I see on how to contact the seller.
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Reviewed in the United States on December 8, 2025
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Diane Knickerbocker
West Palm Beach, US
★★★★★ 5
Would buy again
Pattern Name: Cage Ball, Size: Large - 4 Inch / 8.5 oz
This is a great ball! Both my dogs love it. Queensland is a heavy chewer and I can see no damage. Catahoula loves to fetch and kick after kick and retrieval this ball shows no wear. It’s easy to pick up and is a good size for my dogs.
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Reviewed in the United States on December 11, 2025
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Laura Hein
Massapequa, US
★★★★★ 5
Very Durable Ball
Pattern Name: Cage Ball, Size: Large - 4 Inch / 8.5 oz
This ball has held up to regular puppy chewing for 3 months now. At first I was worried my retriever would get her mouth stuck in it, but it hasn't been a problem since she has gotten bigger. Supervision required for smaller pups. One thing to note is that the ball was shipped with a strong rubber smell, but that has gone away with use and washing. Super easy to clean! It is a heavier ball making it bounce well and it doesn't damage the walls. Super durable. She's been chewing on it every day and there is no damage to it at all. The scratches, holes, or pieces missing. It's stayed intact for months!
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Reviewed in the United States on October 6, 2023
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Verified Purchase
dellanney maxwell snyder
Pawtucket, US
★★★★★ 3
Good ball, but not really for super chewers
Pattern Name: Ball, Size: Large - 3 Inch / 12 oz
This ball is tough...my (foster) dog is tougher. It is a heavy rubber ball, but my Staffordshire bull terrier is able to destroy these balls within about a couple of hours. We never let him chew on these unmonitored. If you have a moderate chewer, this is probably ok for your dog; for any super chewers, you might want to pass. We first bought one of these balls when we learned our foster dog (fresh out of the shelter) had heartworms. We knew we had to keep him occupied somehow, and it is by far his favorite toy (he loves the doughnut-shaped toy as well). We bought MANY of these during his heartworm treatment. Now that he is done with his treatment we won't buy any more of these. They are expensive for what they are. And just be aware that the lifetime warranty only applies to material or manufacturing flaws...not the actual toughness of the product.
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Reviewed in the United States on June 16, 2025
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capriceclassic
Bozeman, US
★★★★★ 5
Awesome for hyper dogs
Color: Blue
AWESOME - I have a dog that just won't stop trying to get me to play with him ALL day! I turn this thing on and he goes nuts and tires himself out...without any help from me. The cover got torn off and torn up in minutes but he doesn't care. He just wants this ball. My other dogs, who are older, aren't really interested. But if you have a hyper dog this is the thing for you and them!
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Reviewed in the United States on April 28, 2026

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