  Changes of the electron work-function of a superconductor proportional to the
square of the current density $\Delta \phi = -\beta j^2$ are known as Bernoulli
effect in superconductors or current induced Contact Potential Difference
(CPD). The temperature dependent constant $\beta(T;m^{\star})$ is parametrized
by the effective mass of Cooper pairs $m^{\star}$. In such a way the study of
the Bernoulli effect leads to creation of Cooper pair mass-spectroscopy. In
this paper a short review on the Bernoulli effect in superconductors is given
and a proposed experimental set-up for its measurement is described in detail.
The experiment requires standard electronic equipment and can be implemented in
every laboratory related to physics of superconductivity. This experimental
set-up for observation of current induced CPD requires nano-technological
hybrid superconductor structures with atomically clean interfaces and
measurement of nano-volt signals with capacitive coupling to the sample.
