Bottle attachment dispenser for non-problematic watery and organic media which do not attack polypropylene, with variable volume configuration in appropriate steps, certified conformity, with precision ground glass piston, suitable for steam sterilisation up to 121°C, A 32 screw thread, delivery complete with 3 threaded adapters (A 28, S 40, A 45), 1 suction hose with union nut, 1 ejection unit and 1 fitting wrench, with individual serial number and calibration certificate.