We use ExoPrep for exosomes islotaion, for biofluids it gives a good result starting from 100 ul. Catalog code is HBM-EXP-B5(10 or 20), depends on amount, you need. Here you can find the product sheet http://www.exotest.eu/online_orders/image/data/inserts%20sheets/Exoprep.pdf
Can you please explain it how I can isolate vesicles on flow cytometry. The bead attachment is the better option but I have no idea does it may affect the downstream processing.