Each of analogue switches enters a non-conductive state by using two kinds of off-voltages Vbs which are different voltages. Thus, the present taste improving substances are advantageously applied in flavour compositions, foodstuffs, tobacco products and oral care products. The shuttle is for a needled syringe of the apparatus and includes a first latching element. The housing houses the transponder, the receiver and, in one embodiment, the display. The body of the implant has a diameter between about 2. The three spectra can be measured simultaneously or sequentially.