Table 2.

Physical properties of nanoparticle suspensions used for Histology sub-group.

Coating	c(Fe) [mg/ml]	Z(Ave) [nm]	P.I.	Z(Ave) [nm] in PBS	P.I. in PBS	Zeta potential (mV)
(Lot)		in H2O	in H2O			at pH 7
CM-dextran [0451745-001]	22.8	171	0.153	272	0.405	−38
PEG-PEI [0461745-001]	23.4	166.6	0.115	136.4	0.123	28