Apparatus for testing bioparameter monitoring devices includes artificial organs that comprise an elongated sponge wrapped in electrically conductive hydrogel skin, inlet and outlet tubes having a reddish liquid flowing therein and a pulsatile pump configured to generate a pulsatile flow of the liquid. A valve has a variable opening. For each artificial organ: the inlet tube extends out of the sponge and connects eventually to the pulsatile pump, the inlet tube penetrating the elongated sponge so as to extend to a tip of the elongated sponge at a distal end of the inlet tube, and the outlet tube extends out of the elongated sponge and connects eventually to the pulsatile pump at a proximal end of the outlet tube, the outlet tube penetrating the sponge so as to extend to a tip of the elongated sponge at a distal end of the outlet tube.
