Why are the measured zeta potentials for the nanoparticles with and without Dotap both showing -1 mV, when the expected values are +6 mV and -5 mV?

I am analyzing the Zeta potential of two nanoparticles containing phytosterol, MAMO, and f127. One with 2.5mol% Dotap and the other without Dotap. I have diluted the nanoparticles in 0.01M...

24 August 2023 6,499 6 View