Universal bottle attachment dispenser with fixed volume configuration, certified conformity, with ceramic piston, reagent recirculation system, suitable for steam sterilisation up to 121°C, A 45 screw thread, delivery complete with 3 threaded adapters (A 32, S 40, A 38), 1 suction hose with union nut, 1 ejection unit and 1 fitting wrench, with individual serial number and calibration certificate.