[en] In liquid scintillation counting, a wide variety of scintillation cocktails is often used, but established quench correlation curves have only on or two. Scintillation cocktails and quench correlation curve do not match, it can lead into from three percent to ten and more per cent error in the counting, even much large scale error. This is a often neglected problem, so that must be paid more attention for liquid scintillation measurer