Table 1.

Overview of size and zeta potential in different suspension media. Sizes of the predominant peak are indicated

Particles	Nominal size (nm)	Water		DMEM		HBSS
		Size (nm)	ζ-Potential (mV)	Size (nm)	ζ-Potential (mV)	Size (nm)	ζ-Potential (mV)
CPS20	20	57	−50	42	−41	740	−20
CPS200	200	275	−29	230	−33	1780	−13
PPS20	20	24	−17	29	−13	763	−13
PPS200	200	262	−49	211	−11	1925	−10
AMI20	20	20	−40	25	−29	823	−24
AMI200	200	224	−37	1415	−9	1327	−12
APS20	20	274	40	717	22	agglom	4
APS200	200	345	55	2831	10	agglom	−1
Aero200	12	261	−17	206	−27	237	−3
OX50	40	546	−20	230	−32	1714	−2

agglom, only agglomerates; DMEM, Dulbecco minimal Eagle’s medium; HBSS, Hank’s balanced salt solution.