Small-angle neutron scattering (SANS) measurements were performed on SANS2d and Larmor instruments at the STFC ISIS Pulsed Neutron and Muon Source, UK. Samples of different concentrations of counterion-exchanged dodecylsulfates (lithium, caesium, magnesium, ethylmethylimidazolium, butylmethylimidazolium, cholinium) in 1:2 choline chloride:urea or choline chloride:glycerol were measured in different isotopic substitutions at 50 ˚C.