Product Overview
CFR200-10 Carboxyl Red Fluorescent Microspheres are premium fluorescent polystyrene nanoparticles featuring bright red fluorescence and reactive surface carboxyl groups. Their excellent fluorescence stability, narrow particle size distribution and reliable surface chemistry make them an ideal choice for fluorescence-based diagnostics and biomolecule conjugation.
Supplied as a 1% aqueous suspension, CFR200-10 provides excellent colloidal stability and consistent fluorescence performance. The surface carboxyl groups can be activated using EDC/NHS chemistry to covalently immobilize antibodies, proteins, peptides and other amine-containing biomolecules for a wide range of bioanalytical applications.
Key Features
Uniform 200 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 nonspecific adsorption
Excellent batch-to-batch consistency
Technical Specifications
Parameter | Specification |
|---|
Product Code | CFR200-10 |
Material | Fluorescent Polystyrene Microspheres |
Particle Size | 200 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)
Antibody Conjugation
Protein Labeling
Biosensors
Molecular Diagnostics
Cell Labeling
Fluorescence Calibration
Life Science Research
Product Advantages
CFR200-10 combines bright red fluorescence with reactive surface carboxyl groups and highly uniform nanoparticles, delivering reliable fluorescence signals and efficient biomolecule immobilization. Compared with smaller nanoparticles, the 200 nm particle size offers higher fluorescence brightness and improved magnetic-free handling while maintaining excellent suspension stability. It is widely used in lateral flow assays, fluorescence immunoassays, biosensors, cell labeling and diagnostic reagent development.
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 with reactive surface carboxyl groups designed for fluorescence detection, biomolecule conjugation and diagnostic assay development.
What are the excitation and emission wavelengths of CFR200-10?
CFR200-10 has an excitation wavelength of 530 nm and an emission wavelength of 580 nm, producing bright red fluorescence for analytical and diagnostic applications.
What applications is CFR200-10 suitable for?
CFR200-10 is suitable for lateral flow assays (LFA), fluorescence immunoassays, antibody conjugation, protein labeling, biosensors, molecular diagnostics, cell labeling, fluorescence calibration and life science research.
Can antibodies be conjugated to CFR200-10?
Yes. The surface carboxyl groups can be activated using EDC/NHS chemistry to form stable covalent bonds with antibodies, proteins, peptides and other amine-containing biomolecules.
How should CFR200-10 be stored?
Store at 2–8°C, protect the suspension from light, avoid freezing, and gently mix before use to maintain optimal fluorescence performance and particle dispersion.
