EPRUI Nanoparticles& Microspheres Co.Ltd. cooperates closely with top magnetic nanomaterials research centers or Universities in China to supply various supermagnetic nanoparticles or magnetic beads. Presently, EPRUI can supply four types of functionalized magnetic nanoparticles including：amino/amine functionalized magnetic nanoparticles; carboxyl group magnetic beads; epoxy group functionalized magnetic nanospheres; -SiOH treated Magnetic particles; IDA group functionalized magnetic nanoparticles.

Item	APS	Appearance	Functional group	Surface loading	Saturation magnetization	Isoelectric point (PI)	Applicable pH range	Concentration
Fe3O4	15nm; 20nm; 100-200nm; 200-300nm; 300-400nm; 400-500nm; 500-600nm;	Reddish brown transparent  to black nano-dispersion solution	-NH2 -COOH -Epoxy -SiOH	> 0.5 mmol/g	>70 emu/g	pH 7~8	pH > 3.5	5mg/ml; 10mg/ml