def V_super_stock(self, V_stock, C_super_stock):
        """Return the volume of super (more concentrated) stock that must be
        diluted for the desired stock volume and required stock concentration.

        :param V_stock: Volume of the stock of material
        :type V_stock: float
        :param C_super_stock: Concentration of the super stock
        :type C_super_stock: float

        :return: Volume of super stock to dilute
        :rtype: float
        """
        return Stock.V_super_stock(self, V_stock, self.C_stock(), C_super_stock)
Return the volume of super (more concentrated) stock that must be
        diluted for the desired stock volume and required stock concentration.

        :param V_stock: Volume of the stock of material
        :type V_stock: float
        :param C_super_stock: Concentration of the super stock
        :type C_super_stock: float

        :return: Volume of super stock to dilute
        :rtype: float