The red carboxyl fluorescent microspheres are a type of red fluorescent material embedded within polystyrene. They have strong and long-lasting fluorescence without quenching, a quantum yield of over 90%, a large Stokes shift, small batch-to-batch differences, good repeatability, and are suitable for the research and large-scale production of lateral chromatography reagents. 

Technical Specifications: 

Excitation wavelength: 365nm 

2. Emission wavelength: 615nm 

3. Functional group: Carboxyl group (COOH) (Customizable SA) 

3. Particle size range: 200nm - 400nm 

4. Uniformity Index: CV < 5% 

5. Storage conditions: Store at 2-8℃. Do not freeze.