Which kind of solvent and modifiers can I use in reversed phase mode?

Suitable neutral mobile phases are: water/acetonitrile or water/methanol in different mixtures. Suitable basic mobile phases are: 0.1 M aqueous salt/acetonitrile (methanol) in different mixtures (recommended salts: PF₆^-, ClO₄^-, NO₃^-, I^-, Br^-, SO₄^2-, CH₃CO₂^-, F^-). Suitable acidic mobile phases are: aqueous (limit pH 2)/acetonitrile (methanol) in different mixtures (use TFA or phosphoric acid).