  It is shown that future solar neutrino experiments (SNO, Super-Kamiokande and
others), in which high energy neutrinos will be detected (mostly from 8B
decay), may allow to answer in a model independent way the question whether
there are transitions of solar $\nu_e$'s into sterile states. No assumptions
about the initial flux of 8B neutrinos are done. Lower bounds for the
probability of transition of solar $\nu_e$'s into all possible sterile states
are derived and expressed through measurable quantities.
