Product Overview
CFR050-10 Carboxyl Red Fluorescent Microspheres are premium fluorescent polystyrene nanoparticles with reactive surface carboxyl groups. Featuring bright red fluorescence, excellent particle size uniformity and stable aqueous dispersion, these nanoparticles are ideal for highly sensitive fluorescence detection and bioanalytical applications.
Supplied as a 1% aqueous suspension, CFR050-10 provides excellent fluorescence stability and reliable batch-to-batch consistency. The surface carboxyl groups can be activated using EDC/NHS chemistry to covalently conjugate antibodies, proteins, peptides and other biomolecules, making these microspheres suitable for lateral flow assays, fluorescence immunoassays, biosensors and molecular diagnostics.
Key Features
Uniform 50 nm particle size
Bright red fluorescence
Surface carboxyl functional groups
High fluorescence intensity
Excellent particle uniformity
Stable aqueous suspension
Compatible with EDC/NHS coupling
High biomolecule conjugation efficiency
Low background fluorescence
Excellent batch-to-batch consistency
Technical Specifications
Parameter | Specification |
|---|
Product Code | CFR050-10 |
Material | Fluorescent Polystyrene Microspheres |
Particle Size | 50 nm |
Surface | Carboxyl (-COOH) |
Solid Content | 1% Suspension |
Excitation (Ex) | 530 nm |
Emission (Em) | 580 nm |
Appearance | Red Fluorescent Suspension |
Storage | 2–8°C |
Packaging | 10 mL / 20 mL / 100 mL |
Applications
Lateral Flow Assays (LFA)
Fluorescence Immunoassays
Chemiluminescence Immunoassays (CLIA)
Biosensors
Molecular Diagnostics
Antibody Conjugation
Protein Labeling
Fluorescence Calibration
Bioassay Development
Life Science Research
Product Advantages
CFR050-10 combines bright red fluorescence with reactive surface carboxyl groups and excellent nanoparticle uniformity, providing reliable performance in fluorescence-based diagnostics and research. The 50 nm particle size offers an optimal balance between surface area, fluorescence intensity and suspension stability, enabling efficient antibody conjugation and highly sensitive detection in immunoassays and biosensor platforms.
Storage and Handling
Store at 2–8°C.
Do not freeze.
Protect from direct light.
Keep the container tightly sealed.
Gently invert before use.
Avoid repeated freeze-thaw cycles.
Prevent microbial contamination during handling.
Customization Service
SANYU GROUP provides customized fluorescent microspheres including:
Customized particle sizes
Customized fluorescence intensity
Customized excitation and emission wavelengths
Surface functionalization
Customized solid content
OEM manufacturing
Bulk production
Custom packaging
Frequently Asked Questions
What are Carboxyl Red Fluorescent Microspheres?
Carboxyl Red Fluorescent Microspheres are fluorescent polystyrene nanoparticles functionalized with surface carboxyl groups. They are widely used in fluorescence immunoassays, lateral flow assays, biosensors and molecular diagnostics.
What are the excitation and emission wavelengths of CFR050-10?
CFR050-10 has an excitation wavelength of 530 nm and an emission wavelength of 580 nm, making it suitable for red fluorescence detection systems.
What applications is CFR050-10 suitable for?
CFR050-10 is suitable for lateral flow assays (LFA), fluorescence immunoassays, molecular diagnostics, antibody conjugation, protein labeling, fluorescence calibration, biosensors and life science research.
Can antibodies be conjugated to CFR050-10?
Yes. The surface carboxyl groups can be activated using EDC/NHS chemistry to covalently conjugate antibodies, proteins, peptides and other amine-containing biomolecules.
How should CFR050-10 be stored?
Store at 2–8°C, protect the product from light, avoid freezing, and gently mix before use to maintain a homogeneous suspension.
