. Author manuscript; available in PMC: 2015 May 18.

Published in final edited form as: Cell Biol Toxicol. 2013 Nov 29;30(1):1–16. doi: 10.1007/s10565-013-9265-y

Table 1.

Overview of physico-chemical characterisation of the CPS particles (size and surface charge) in water (data given by the producer) and in suspension media used in the assays assessed by photon correlation spectroscopy and laser Doppler velocimetry

Particle	Particle size^a (nm) producer	Size in PBS (nm)	Size in DMEM (nm)	Size (coated) in PBS (nm)	Charge density^a (μC/cm²)producer	Zeta pot. in PBS (mV)	Zeta pot. in DMEM (mV)	Zeta pot. (coated) in PBS (mV)
CPS20	26	41	42^b/300	37.5	0.5	−44.9	−41.2	−47.2
CPS100	140	135	158	247	2.7	−40.0	−36.8	−16.5
CPS200	160	165	230	357	16.8	−35.6	−36.6	−27.6
CPS500	450	563	550	578	14.6	−37.6	−35.7	−20.4
CPS1000	1,100	1,106	1,271	1,494	12.5	−28.8	−29.2	−10.8

PBS phosphate-buffered saline, DMEM Dulbecco’s modified eagle medium

Data for the lot of CPS particles used for the experiments, provided by the producer

Two peaks of distribution with predominant peak (70 %) indicated first