Hi,

You may make an inquiry at Alfa Chemistry, they offer a wide range of high quality chemicals and laboratory equipment.

https://www.alfa-chemistry.com/inquiry

Dear Sylwia Meczynska ,

I would take a look at Polyscience (https://www.polysciences.com/).

Best wishes

Soenke

Dear Sylwia, if you need FITC-labeled 20 nm polystyrene nanobeads, you may try MedChemExpress (MCE)'s custom synthesis service!

Simply click the link below to submit your request, and their professional team will promptly evaluate and provide feedback. https://www.medchemexpress.com/fluorescent-labeling-service.html

Hope this helpful and feel free to reach out for more details.

If you’re looking for 20 nm FITC-labeled polystyrene nanobeads for flow cytometry, a few suppliers offer suitable products. Molecular Depot provides polystyrene nanoparticles conjugated to FITC, though the price isn’t listed on their website. Nanocs also offers FITC-labeled polystyrene beads in 20 nm sizes, with prices starting at $485 for 0.5 mL and $685 for 1 mL. While Spherotech does carry FITC-labeled polystyrene particles, their smallest available size starts at 0.7–0.9 µm, which is significantly larger than 20 nm. Before purchasing, it’s a good idea to check with the suppliers directly to confirm product specifications, compatibility with your flow cytometry setup, and shipping options to your location.