Code | Composition of mobile phase |
---|---|
M1-M5 | 10, 5, 2, 1 and 0.1% (w/v) aqueous 1-methyl-imidazolium chloride respectively |
M6-M10 | 10, 5, 2, 1 and 0.1% (w/v) aqueous 1,2,3-trimethylimidazolium-methyl sulphate, respectively |
M11-M15 | 10, 5, 2, 1 and 0.1% (w/v) aqueous 1-ethyl 3-methyl-imidazolium tetrafluoroborate, respectively |