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Silica Particle Sizing Probes

Ursa BioScience™ offers two classes of fluorescent-based particle sizing probes, Electrostatic and Covalently binding probes for all your nanoparticle metrology needs.

Ursa BioScience™ offers 5 different fluorescence anisotropy probes in our electrostatic binding category. Each probe has either slightly different water solubility’s, facilitating affinities for different types of nanoparticles, and/or slightly different fluorescence / photophysical properties, e.g. fundamental anisotropy, excitation and emission wavelength etc.

Ursa BioScience™ also offers several fluorophores which will covalently bind nanoparticles, and similar to our electrostatic probes, we offer several anisotropy probes with differing water solubility’s and photophysical properties, e.g. fundamental anisotropy, excitation and emission wavelength etc.

Our Particle Sizing probes are sold dry in mirco-vials and are simply reconstituted by adding water/MeOH/EtOH and/or buffer. One vial of our probe will typically allow for 10 particle sizing measurements to be undertaken, when further diluted into 3 cm3 volumes within an appropriate cuvette.

For optimum performance, probe vials should be stored at -2 to -8 C when not being used. Probe solutions should be used after dilution.

Ursa BioScience™ also offers convenient particle sizing kits, with Ursa’s range of particle sizing probes already dispensed within plastic 1-1-4 cm cuvettes for easy, quick and no hassle use. Our Electrostatic Particle Sizing Kit™ contains all 5 electrostatic probes dispensed within 1-1-4 cm cuvettes for customers wishing to try the significant advantages of both our dyes and nanoparticle metrology approach.

Read more about Ursa BioScience's particle sizing probes in the technology section.

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Silica Particle Sizing Probes

Ursa Blue™ is a cationic, highly water...

Sales price: $499.00

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Similar to Ursa Blue™, but less polar...

Sales price: $399.00

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Rotational Blue 2™ is considerably less...

Sales price: $399.00

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Rotational Blue 3™ has comparable water...

Sales price: $399.00

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Ursa’s Dipole Blue™ particle sizing...

Sales price: $399.00

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