the effect of adding anionic ( sodium dodecyl sulphate ) cationic ( dodecyl trimethyl bromide ) and non-ionic ( polyoxyethylene glycol monoethers of hexadecanol ) surface-active agents , and mixtures of these ionic and non-ionic species , on the electrophoretic properties of the drug dispersions has been measured .
C0003075
anionic
C0006222
bromide