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Time-resolved fluorescent microspheres
Immunochromatography, which emerged in the early 1980s, is a new detection technique that combines immunolabeling technology and chromatography. Time-resolved fluorescence immunochromatography, a quantitative detection technique combining immunofluorescence technology and traditional immunochromatographic technology, has various advantages such as high specificity, high sensitivity, wide linear range and good stability. As the basis of time-resolved fluorescence immunoassay technique, excellent labeling carriers are essential, and microspheres are one of the essential raw materials in immunochromatographic labeling.
Time-resolved fluorescent microspheres are an important element of time-resolved fluorescence immunochromatography technique, which can undergo emission of near-infrared wavelengths under UV excitation. Since it contains the lanthanide element Eu, it has a longer fluorescence decay time of milliseconds compared to ordinary fluorescent microspheres. The time-resolved fluorescent microspheres introduced by Heavy Chain Biology have good dispersion, uniform particle size and stable performance, which can meet the requirements of immunochromatographic product development.
Microsphere concentration: 1% (1ml solution contains 10mg microsphere particles)
Average particle size: 180nm
Excitation wavelength: 340-370nm
Emission wavelength: 610-615nm
Uniformity: cv<10%
Carboxyl content: 30-40umol/g
The red microspheres are obtained from blank microspheres by a unique surface modification process. The internal dyeing process ensures that the microspheres are full and stable in color, with no dye leakage on the surface, which improves the covalent coupling efficiency and detection sensitivity of the microsphere surface. With the advantages of stable performance, high saturation and small batch-to-batch variation, the product can be used for a variety of diagnostic and labeling applications and is commonly used in chromatography products.
Microsphere concentration: 4% (1ml of solution contains 40mg of microsphere particles)
Average particle size: 280nm
Uniformity: cv<5%
Carboxyl content: 30-40umol/g
Heavy Chain Biologics can provide red latex microspheres and time-resolved fluorescent microspheres to meet customers' needs for immunochromatographic experiments and applications.