The best capture technique depends upon the particles you are using and the concentration of target. For example, rare cells, using our 250 nm particles require a ratio of 10000 to 1 non targeted to targeted cells with nano particle to cell dilution of 2 x 10^7 cells / 0.5 mg of nano particles. Incubation at room temp for 30min to 1 hour.If you provide me with your requirements I would be more specific.My email is [email protected]